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BIRDSONG | 0:00:02 | 0:00:03 | |
If you want to see some of the most celebrated creatures of summer, | 0:00:03 | 0:00:08 | |
a wildflower meadow like this is the place to be. | 0:00:08 | 0:00:11 | |
Here, you might find Admirals, a Duke, an Emperor, | 0:00:13 | 0:00:18 | |
even perhaps a Painted Lady. | 0:00:18 | 0:00:21 | |
Which sounds a bit like the cast of glamorous costume drama, | 0:00:21 | 0:00:25 | |
but it's not. | 0:00:25 | 0:00:26 | |
Because we're about to meet | 0:00:26 | 0:00:28 | |
some of the most colourful, dazzling, exotic animals | 0:00:28 | 0:00:31 | |
in the whole of the United Kingdom. | 0:00:31 | 0:00:34 | |
The butterflies. | 0:00:35 | 0:00:37 | |
It's easy to see why they're so captivating. | 0:00:40 | 0:00:45 | |
The sheer variety of their forms and colours is mind-boggling, | 0:00:45 | 0:00:50 | |
and nothing beats seeing them on the wing. | 0:00:50 | 0:00:52 | |
And here is a butterfly - it's a Common Blue - just sunning herself. | 0:00:55 | 0:01:02 | |
You can't call that a Common B... Oh! | 0:01:03 | 0:01:06 | |
..a Common Blue. | 0:01:06 | 0:01:07 | |
That's a sophisticated animal. | 0:01:07 | 0:01:09 | |
This, their most lovely stage, | 0:01:13 | 0:01:16 | |
is just a brief part of a fascinating life story. | 0:01:16 | 0:01:20 | |
They make a miraculous transformation | 0:01:20 | 0:01:22 | |
from plump, earthbound caterpillar | 0:01:22 | 0:01:25 | |
into winged beauty - | 0:01:25 | 0:01:28 | |
a process we're only now beginning to fully understand. | 0:01:28 | 0:01:31 | |
Perhaps just in the nick of time. | 0:01:31 | 0:01:34 | |
100 years ago, naturalists describe fields like this | 0:01:36 | 0:01:41 | |
as being alive with literally clouds of butterflies. | 0:01:41 | 0:01:45 | |
What a sight that must have been! | 0:01:45 | 0:01:47 | |
But today, I am having to keep my eyes peeled to see just one or two. | 0:01:47 | 0:01:52 | |
And a combination of the modern world | 0:01:52 | 0:01:55 | |
and changes in the climate have hit these delicate, | 0:01:55 | 0:01:59 | |
and sometimes very specialised creatures, very hard. | 0:01:59 | 0:02:02 | |
Recent wet summers | 0:02:03 | 0:02:05 | |
have been disastrous for our butterflies and moths. | 0:02:05 | 0:02:08 | |
So, we at Springwatch think that now is the time | 0:02:08 | 0:02:10 | |
to turn the spotlight on these fragile creatures. | 0:02:10 | 0:02:13 | |
It's time to discover... | 0:02:14 | 0:02:17 | |
Where are they? What makes them tick? | 0:02:17 | 0:02:20 | |
And, perhaps, most important of all, what can we do | 0:02:20 | 0:02:24 | |
to give our butterflies a much-needed boost. | 0:02:24 | 0:02:27 | |
So welcome to the Springwatch Guide to Butterflies AND Moths. | 0:02:27 | 0:02:32 | |
We have 59 different species of butterfly | 0:03:04 | 0:03:07 | |
and well over 2,000 different species of moth. | 0:03:07 | 0:03:10 | |
They all belong to the insect family Lepidoptera - | 0:03:13 | 0:03:17 | |
meaning scaled wing. | 0:03:17 | 0:03:19 | |
Some of the showiest have showy names to match - | 0:03:20 | 0:03:24 | |
there's painted ladies, | 0:03:24 | 0:03:26 | |
swallowtails, | 0:03:26 | 0:03:28 | |
monarchs, and peacocks. | 0:03:28 | 0:03:31 | |
These aren't just pretty faces - | 0:03:31 | 0:03:33 | |
their private lives are complex and intriguing. | 0:03:33 | 0:03:36 | |
Later, Chris will be probing the details of those lives | 0:03:39 | 0:03:43 | |
in gorgeous ultra close-up. | 0:03:43 | 0:03:45 | |
This thing is very much alive. | 0:03:46 | 0:03:49 | |
Loads in there! | 0:03:49 | 0:03:50 | |
Michaela will discover the sensitive side of our mysterious moths. | 0:03:50 | 0:03:55 | |
A male emperor moth detected a female up to five miles away. | 0:03:55 | 0:03:59 | |
And I'll be meeting some truly wonderful butterfly enthusiasts. | 0:03:59 | 0:04:03 | |
It's a vicious little thug. | 0:04:03 | 0:04:06 | |
And showing you how you can create a haven for butterflies | 0:04:06 | 0:04:10 | |
in your very own back yard. | 0:04:10 | 0:04:13 | |
Oh, what was that? | 0:04:13 | 0:04:15 | |
We're surrounded by them now, aren't we? | 0:04:15 | 0:04:18 | |
When you look closely, these animals can be pretty outlandish. | 0:04:18 | 0:04:23 | |
Each butterfly, each moth, | 0:04:23 | 0:04:25 | |
has its own sometimes remarkable tale to tell. | 0:04:25 | 0:04:28 | |
So let's start... with a mystery story - | 0:04:29 | 0:04:34 | |
The Tangled Tale Of The Lady Who Vanished. | 0:04:34 | 0:04:37 | |
The beautiful Painted Lady. | 0:04:39 | 0:04:42 | |
We think of it as a British species, | 0:04:42 | 0:04:44 | |
when, in fact, each summer it arrives here from the Continent. | 0:04:44 | 0:04:48 | |
But although it captivates us, | 0:04:48 | 0:04:50 | |
one thing has always puzzled scientists. | 0:04:50 | 0:04:53 | |
When it comes to winter, all our Painted Ladies disappear. | 0:04:55 | 0:04:59 | |
Now you might think - | 0:05:03 | 0:05:04 | |
where do any of our butterflies go at the end of summer? | 0:05:04 | 0:05:08 | |
Well, our resident species over-winter here | 0:05:08 | 0:05:11 | |
at various stages of their life cycle, | 0:05:11 | 0:05:13 | |
whether it's as an egg, a chrysalis, or even as an adult. | 0:05:13 | 0:05:17 | |
The Painted Lady is a migrant, flying up to the UK from the south, | 0:05:19 | 0:05:24 | |
and there were no sightings of these visitors | 0:05:24 | 0:05:26 | |
making the reverse trip home. | 0:05:26 | 0:05:28 | |
And then the truth was discovered. | 0:05:30 | 0:05:32 | |
It's a long story of a long journey. | 0:05:32 | 0:05:36 | |
It starts all the way down in the searing heat of north Africa. | 0:05:38 | 0:05:43 | |
So this is what's going on. | 0:05:45 | 0:05:48 | |
The Painted Ladies fly across here, | 0:05:48 | 0:05:50 | |
the north coast of Africa, | 0:05:50 | 0:05:52 | |
and then they lay eggs. | 0:05:52 | 0:05:53 | |
Those eggs hatch, move up into Spain. | 0:05:53 | 0:05:56 | |
They lay eggs, | 0:05:56 | 0:05:57 | |
they move up into France. | 0:05:57 | 0:06:00 | |
And only then... | 0:06:00 | 0:06:02 | |
into the UK, going as far north as southern Scotland. | 0:06:02 | 0:06:06 | |
It's like a relay race of successive generations. | 0:06:10 | 0:06:13 | |
But where does our British-born generation go to | 0:06:13 | 0:06:17 | |
at the end of summer? | 0:06:17 | 0:06:18 | |
Well, in 2012 supersensitive radar picked them up | 0:06:18 | 0:06:23 | |
in an unexpected place. | 0:06:23 | 0:06:25 | |
They ARE going back to Africa, | 0:06:26 | 0:06:29 | |
but flying at a height of over 500 metres. | 0:06:29 | 0:06:32 | |
High in the sky, way beyond our human eyes, | 0:06:33 | 0:06:38 | |
those relatively small butterflies catch the wind | 0:06:38 | 0:06:42 | |
and that whisks them along at up to 70km an hour, | 0:06:42 | 0:06:46 | |
heading south, back towards Africa. | 0:06:46 | 0:06:49 | |
Astonishing. | 0:06:49 | 0:06:51 | |
So, for the case of the disappearing lady, the mystery's solved. | 0:06:51 | 0:06:56 | |
Much of what we know about butterflies and moths | 0:07:03 | 0:07:06 | |
has only been gleaned in the last few centuries, | 0:07:06 | 0:07:09 | |
but they've been around for millions of years. | 0:07:09 | 0:07:12 | |
Most of us are familiar with the ones we see in our parks and gardens. | 0:07:15 | 0:07:19 | |
The tiny Holly Blue. | 0:07:19 | 0:07:22 | |
The classic Tortoiseshell. | 0:07:23 | 0:07:26 | |
And the Brimstone - the original butter-coloured fly, | 0:07:26 | 0:07:30 | |
said to have given butterflies their name. | 0:07:30 | 0:07:32 | |
Many are far more particular about where they live. | 0:07:34 | 0:07:37 | |
Some Blues live in tiny colonies on south-facing slopes of chalky hillsides. | 0:07:37 | 0:07:43 | |
The Heath Fritillary loves the woodland glade. | 0:07:45 | 0:07:48 | |
And one little character - the Mountain Ringlet - | 0:07:48 | 0:07:52 | |
lives mostly in grassy tussocks high in the Scottish Highlands. | 0:07:52 | 0:07:56 | |
It's this specialisation | 0:07:57 | 0:08:00 | |
that makes them so widely and beautifully different. | 0:08:00 | 0:08:04 | |
And it's all down to the peculiarities | 0:08:04 | 0:08:07 | |
of their amazing life cycle. | 0:08:07 | 0:08:09 | |
Something that Chris has been having a really close look at. | 0:08:11 | 0:08:15 | |
Now, the first stage is the egg. | 0:08:15 | 0:08:18 | |
But there is an immediate problem when it comes to the eggs | 0:08:18 | 0:08:21 | |
of the UK's butterflies and moths. | 0:08:21 | 0:08:23 | |
They are extremely small - rarely more than one millimetre in diameter. | 0:08:23 | 0:08:28 | |
For instance, you can just about make them out | 0:08:28 | 0:08:31 | |
as these tiny spots here. | 0:08:31 | 0:08:34 | |
But to truly appreciate them, we need to magnify them, | 0:08:34 | 0:08:36 | |
and on that account we've got this camera set up here | 0:08:36 | 0:08:40 | |
with a macro lens pointing down at the eggs on this stage | 0:08:40 | 0:08:44 | |
magnifying them fantastically. | 0:08:44 | 0:08:46 | |
Magnificently magnified, Chris! | 0:08:49 | 0:08:52 | |
At this size, we're getting a butterfly's eye view | 0:08:54 | 0:08:57 | |
of these microscopic gems. | 0:08:57 | 0:09:00 | |
But which beautiful creature made these? | 0:09:01 | 0:09:06 | |
These are the eggs of an Oleander Hawk-moth. | 0:09:07 | 0:09:11 | |
A truly exotic species - | 0:09:11 | 0:09:12 | |
a migrant which occasionally turns up in the UK. | 0:09:12 | 0:09:15 | |
Its eggs are almost completely smooth, | 0:09:15 | 0:09:18 | |
but many of these insect eggs are highly sculptured, ridged, | 0:09:18 | 0:09:22 | |
with all sorts of processes. | 0:09:22 | 0:09:25 | |
They're very, very beautiful things indeed. | 0:09:25 | 0:09:28 | |
I was looking at the fruit bowl this morning, | 0:09:28 | 0:09:30 | |
and I thought to myself there are clear parallels | 0:09:30 | 0:09:32 | |
between some of the fruits I had there and the butterflies' eggs. | 0:09:32 | 0:09:37 | |
These ones, physalis, | 0:09:37 | 0:09:39 | |
show a fair comparison with highly magnified views | 0:09:39 | 0:09:43 | |
of those Brimstone eggs. | 0:09:43 | 0:09:45 | |
And then, this cauliflower head... | 0:09:45 | 0:09:48 | |
Now, you're going to think I'm losing it here, but I'm not. | 0:09:48 | 0:09:51 | |
Eggs of some of the Hairstreaks, particularly Black Hairstreaks, | 0:09:51 | 0:09:55 | |
seriously do look a bit like this. | 0:09:55 | 0:09:58 | |
All of those processes - ridges and dimples - are there for a reason. | 0:10:01 | 0:10:05 | |
Firstly, they're about protecting the young caterpillar, | 0:10:05 | 0:10:08 | |
which is developing inside that egg. | 0:10:08 | 0:10:11 | |
They're also about allowing it to breathe, | 0:10:11 | 0:10:14 | |
because in the top of all these eggs | 0:10:14 | 0:10:16 | |
there's something called the micropyle, | 0:10:16 | 0:10:19 | |
and this is a pore which allows oxygen into the egg, | 0:10:19 | 0:10:23 | |
so the young animal can respire whilst it's growing. | 0:10:23 | 0:10:27 | |
And all that, on eggs the size of a grain of sugar. | 0:10:29 | 0:10:32 | |
But - question - why aren't they all more-or-less the same shape? | 0:10:32 | 0:10:37 | |
Well, they're carefully adapted to suit exactly where they are laid. | 0:10:37 | 0:10:41 | |
You see, butterflies and moths drink nectar from flowers, | 0:10:42 | 0:10:46 | |
but for caterpillars, it's all about leaves. | 0:10:46 | 0:10:50 | |
So it's absolutely critical mum lays her eggs on the right plant | 0:10:54 | 0:10:58 | |
to provide her offspring the nourishment they need to grow. | 0:10:58 | 0:11:03 | |
And she's very, very picky about where she lays them - | 0:11:03 | 0:11:07 | |
checking out how young the leaves are, | 0:11:07 | 0:11:10 | |
how warm the ground is, | 0:11:10 | 0:11:12 | |
how tall the vegetation is. | 0:11:12 | 0:11:14 | |
And there's one butterfly that does all this | 0:11:14 | 0:11:18 | |
and yet decides to lay her eggs in the most unexpected place imaginable. | 0:11:18 | 0:11:24 | |
Meet the 'artillery' Fritillary! | 0:11:24 | 0:11:27 | |
Salisbury Plain - the largest military training area in Britain. | 0:11:33 | 0:11:38 | |
It's home to 50,000 soldiers, | 0:11:41 | 0:11:44 | |
hundreds of tanks, | 0:11:44 | 0:11:46 | |
dozens of helicopters, and... | 0:11:46 | 0:11:49 | |
the Marsh Fritillary. | 0:11:49 | 0:11:52 | |
Here, this rare butterfly spends its whole life | 0:11:55 | 0:11:59 | |
in a patch of ground no bigger than a couple of football pitches. | 0:11:59 | 0:12:03 | |
It doesn't ask for much, | 0:12:03 | 0:12:05 | |
all it needs is the soil, a very particular plant | 0:12:05 | 0:12:09 | |
and one other rather unlikely ingredient...disturbance. | 0:12:09 | 0:12:13 | |
Army manoeuvres keep churning up the turf, | 0:12:15 | 0:12:18 | |
and where the topsoil is scraped off, | 0:12:18 | 0:12:21 | |
with it go the seeds of competing plants. | 0:12:21 | 0:12:23 | |
And that allows the Devil's-bit Scabious to grow. | 0:12:23 | 0:12:27 | |
Under this leaf, | 0:12:30 | 0:12:31 | |
are the maroon-coloured eggs of the Marsh Fritillary. | 0:12:31 | 0:12:35 | |
By the time these hatch, this plant will be about three feet tall. | 0:12:35 | 0:12:39 | |
And that's what makes it so attractive to this butterfly. | 0:12:41 | 0:12:45 | |
Devil's-bit Scabious is the main food plant for their caterpillars, | 0:12:45 | 0:12:49 | |
and because it thrives in this turbulent battle ground so will they. | 0:12:49 | 0:12:54 | |
It's the best possible start | 0:12:54 | 0:12:56 | |
for the next phase of this remarkable odyssey. | 0:12:56 | 0:12:59 | |
Welcome...the caterpillar. | 0:13:02 | 0:13:04 | |
Even before they leave the shell, the caterpillar is chewing. | 0:13:13 | 0:13:17 | |
They don't hatch, so much as eat their way out. | 0:13:20 | 0:13:23 | |
The egg is their first meal - vital protein - | 0:13:34 | 0:13:37 | |
from here on it's vegetation all the way. | 0:13:37 | 0:13:40 | |
This is the beauty of the lepidopteran life cycle - | 0:13:49 | 0:13:53 | |
each stage is perfectly suited to one job, and one job only. | 0:13:53 | 0:13:58 | |
So, Chris, what exactly is the caterpillar's job? | 0:13:58 | 0:14:02 | |
Its job is quite simple - it's to eat as much as possible | 0:14:02 | 0:14:06 | |
whilst avoiding getting eaten as much as possible. | 0:14:06 | 0:14:09 | |
This is a Scarlet Tiger caterpillar, | 0:14:09 | 0:14:12 | |
and it typifies these types of animal. | 0:14:12 | 0:14:14 | |
And, in fact, although it looks like a long tube, | 0:14:14 | 0:14:16 | |
we can break it down into its typical insect components. | 0:14:16 | 0:14:20 | |
There's a head at this end here, | 0:14:20 | 0:14:21 | |
complete with mandibles for munching, | 0:14:21 | 0:14:24 | |
It's got a couple of eyes that we call stemmata, | 0:14:24 | 0:14:26 | |
and then behind this, we've got the thorax. | 0:14:26 | 0:14:29 | |
This has three structured legs, these are its proper walking legs. | 0:14:29 | 0:14:34 | |
Then you've got the abdomen, | 0:14:34 | 0:14:35 | |
which stretches all the way down to the back, | 0:14:35 | 0:14:38 | |
and on that, four pairs of prolegs - | 0:14:38 | 0:14:40 | |
these are very simple organs with little sticky suckers at the bottom. | 0:14:40 | 0:14:45 | |
Perfect for grasping. | 0:14:45 | 0:14:47 | |
I've got a friend here, with this little Scarlet Tiger. | 0:14:49 | 0:14:52 | |
An exquisite piece of natural design. | 0:14:52 | 0:14:56 | |
Caterpillars come in a bewildering variety of decorations | 0:14:57 | 0:15:01 | |
and colours, smooth and round, rough and hairy. | 0:15:01 | 0:15:05 | |
These spikes look fearsome and that's the point. | 0:15:08 | 0:15:12 | |
Some of these hairs can snap off | 0:15:12 | 0:15:14 | |
and stick into the flesh of an attacker. | 0:15:14 | 0:15:16 | |
The UK's brown-tail moth does this. | 0:15:17 | 0:15:20 | |
Some caterpillars can be poisonous, and can even kill humans. | 0:15:24 | 0:15:28 | |
But, thankfully, our own species may look dangerous, | 0:15:28 | 0:15:32 | |
but they won't do you any real harm. | 0:15:32 | 0:15:34 | |
Those prickles are simply saying leave me alone to eat - | 0:15:36 | 0:15:39 | |
and, boy, do they pile on the ounces! | 0:15:39 | 0:15:43 | |
In just 20 days, some can increase their body weight by 10,000 times. | 0:15:45 | 0:15:52 | |
Most are purely vegetarian, | 0:15:52 | 0:15:54 | |
but not all. | 0:15:54 | 0:15:55 | |
Now a story that seems so unlikely when you first hear about it, | 0:15:57 | 0:16:02 | |
it seems almost impossible to believe. | 0:16:02 | 0:16:05 | |
It is the incredible tale of The Guest In The Nest. | 0:16:05 | 0:16:09 | |
Of all our British butterflies, | 0:16:13 | 0:16:16 | |
the caterpillar of the Large Blue is perhaps the most conniving. | 0:16:16 | 0:16:22 | |
In 1979, the Large Blue was officially declared | 0:16:22 | 0:16:26 | |
extinct in Britain. | 0:16:26 | 0:16:28 | |
But it's made a remarkable comeback thanks to years of tireless research | 0:16:28 | 0:16:32 | |
that's uncovered the missing links in a very unusual life cycle. | 0:16:32 | 0:16:36 | |
And it's all to do with an ant... | 0:16:38 | 0:16:41 | |
-SHEEP BLEATS -..and some sheep. | 0:16:42 | 0:16:45 | |
The adult butterfly lays its eggs on wild thyme, | 0:16:51 | 0:16:55 | |
growing amongst the short grasses of chalk hillsides. | 0:16:55 | 0:16:59 | |
After it's hatched, the caterpillar crawls off to wait in the grass | 0:17:01 | 0:17:05 | |
until a red meadow ant on foraging duties passes by. | 0:17:05 | 0:17:10 | |
By mimicking the smell of the ant's own young, | 0:17:12 | 0:17:14 | |
the caterpillar tricks it into carrying it back to the nest. | 0:17:14 | 0:17:18 | |
Once inside, the caterpillar turns predator, | 0:17:20 | 0:17:23 | |
devouring the ready-stocked larder of ant larvae. | 0:17:23 | 0:17:26 | |
The ants keep tending the intruder, even when it turns into a chrysalis. | 0:17:29 | 0:17:33 | |
When it eventually emerges, the adult will literally fly the nest. | 0:17:35 | 0:17:40 | |
These ants are vital to the butterfly, but they, the ants, | 0:17:43 | 0:17:47 | |
are very particular about the type of grass they need. | 0:17:47 | 0:17:49 | |
Too long produces shade that cools the nest and they move out. | 0:17:49 | 0:17:54 | |
And that is where the sheep come in. | 0:17:54 | 0:17:57 | |
By keeping the grass short the ants are happy, | 0:17:57 | 0:17:59 | |
and the Large Blue is happy, and we're happy, | 0:17:59 | 0:18:02 | |
marvelling at one of our most stunning butterflies! | 0:18:02 | 0:18:06 | |
Now, as they pile on those ounces, | 0:18:13 | 0:18:16 | |
caterpillars need to shed their skin allowing them to expand. | 0:18:16 | 0:18:20 | |
This happens about four times, | 0:18:20 | 0:18:22 | |
until the last skin becomes something very special. | 0:18:22 | 0:18:26 | |
It's called the pupal case - | 0:18:31 | 0:18:35 | |
better known as the chrysalis. | 0:18:35 | 0:18:37 | |
And it's different for butterflies and moths. | 0:18:37 | 0:18:39 | |
Here's Chris to show how. | 0:18:39 | 0:18:41 | |
Moths will typically spin a silk cocoon like this, | 0:18:44 | 0:18:49 | |
and this acts as a protective capsule | 0:18:49 | 0:18:52 | |
for the chrysalis which forms inside. | 0:18:52 | 0:18:55 | |
It's waterproof and more importantly, sometimes it's predator-proof, too - | 0:18:55 | 0:18:59 | |
because these things can be incredibly tough. | 0:18:59 | 0:19:03 | |
But what's going on inside here? | 0:19:03 | 0:19:07 | |
Well, this is a classic moth pupal case. | 0:19:07 | 0:19:11 | |
In this case, Poplar Hawk-moth. | 0:19:11 | 0:19:14 | |
Now, initially, it looks rather plain and cylindrical. | 0:19:14 | 0:19:17 | |
But if you look in detail, you can see structure there. | 0:19:17 | 0:19:20 | |
At the head-end of it there are eyes. | 0:19:27 | 0:19:30 | |
You can see the proboscis below. | 0:19:36 | 0:19:39 | |
Its antennae, the folded legs, and then, on its back, | 0:19:42 | 0:19:46 | |
the rudiments of its wings. | 0:19:46 | 0:19:48 | |
Down the side, that row of holes, | 0:19:53 | 0:19:56 | |
those are the spiracles - the air-breathing tubes, | 0:19:56 | 0:19:59 | |
which this animal is still using as it goes through this transformation. | 0:19:59 | 0:20:04 | |
Butterfly pupae, on the other hand, are much different. | 0:20:13 | 0:20:18 | |
Look at this. This is a great work of natural art. | 0:20:18 | 0:20:22 | |
It's the pupal case of the Silver-washed Fritillary. | 0:20:27 | 0:20:31 | |
It's one of the great miracles of nature. | 0:20:32 | 0:20:35 | |
Now typically, these don't spin silk, butterfly caterpillars, | 0:20:55 | 0:21:00 | |
other than the small amount that they provide, | 0:21:00 | 0:21:03 | |
so that they can hang like this. | 0:21:03 | 0:21:06 | |
The caterpillar has found a secret sheltered spot, | 0:21:11 | 0:21:14 | |
it's attached itself with this silk. | 0:21:14 | 0:21:18 | |
It then splits its skin, | 0:21:27 | 0:21:32 | |
and as that final skin peels off, | 0:21:32 | 0:21:37 | |
this is revealed from beneath. | 0:21:37 | 0:21:40 | |
And at this stage, you might be forgiven for thinking | 0:21:41 | 0:21:44 | |
that the animal was about to die. | 0:21:44 | 0:21:46 | |
It becomes discoloured, moribund, | 0:21:46 | 0:21:49 | |
but it's going through a very important process. | 0:21:49 | 0:21:53 | |
Look at that. Amazing. | 0:21:53 | 0:21:56 | |
It's flinching. Because this is very much alive. | 0:21:56 | 0:22:00 | |
Very much alive. | 0:22:00 | 0:22:02 | |
And what's going on inside here? | 0:22:02 | 0:22:06 | |
It's one of the great miracles of nature. | 0:22:06 | 0:22:08 | |
It's a process that's fascinated artists and writers | 0:22:13 | 0:22:17 | |
with an eye on the philosophical. | 0:22:17 | 0:22:19 | |
Themes of rebirth, reinvention, | 0:22:21 | 0:22:24 | |
transient beauty... | 0:22:24 | 0:22:27 | |
They're all there. | 0:22:27 | 0:22:29 | |
Not to mention the fact that the whole phenomenon | 0:22:29 | 0:22:32 | |
is unfathomably mysterious. | 0:22:32 | 0:22:35 | |
But in the last few years, | 0:22:37 | 0:22:38 | |
the secrets of life inside the chrysalis | 0:22:38 | 0:22:41 | |
are slowly being revealed. | 0:22:41 | 0:22:43 | |
What's going on in this tiny capsule, as I speak - | 0:22:46 | 0:22:50 | |
the transformation of a caterpillar through to a butterfly | 0:22:50 | 0:22:55 | |
is something that baffled scientists for hundreds - | 0:22:55 | 0:22:57 | |
if not thousands - of years. | 0:22:57 | 0:22:59 | |
Initially, we thought that the caterpillar completely melted. | 0:22:59 | 0:23:04 | |
It turned into a cell soup inside here, | 0:23:04 | 0:23:06 | |
which required complete reorganisation. | 0:23:06 | 0:23:10 | |
But recently we've learned | 0:23:10 | 0:23:12 | |
through scanning these pupae as they're developing | 0:23:12 | 0:23:15 | |
that certain key organs are retained | 0:23:15 | 0:23:18 | |
from the caterpillar all the way through to the butterfly. | 0:23:18 | 0:23:22 | |
The tracheal system - the breathing tubes | 0:23:22 | 0:23:24 | |
that run from these spiracles into the heart of the animal. | 0:23:24 | 0:23:28 | |
So, too, the gut is shrunken and highly modified, | 0:23:28 | 0:23:31 | |
so it fits into the abdomen of the adult insect. | 0:23:31 | 0:23:35 | |
And it's also likely that some of the nervous tissue | 0:23:35 | 0:23:38 | |
is retained intact, too - particularly the brain. | 0:23:38 | 0:23:42 | |
And we know this because of a remarkable recent discovery. | 0:23:42 | 0:23:46 | |
You see, scientists have trained caterpillars | 0:23:46 | 0:23:49 | |
to be repulsed by certain smells and tastes, | 0:23:49 | 0:23:53 | |
and what they found was after those caterpillars pupated, | 0:23:53 | 0:23:57 | |
the adult insects showed the same reaction | 0:23:57 | 0:24:00 | |
to those repulsive smells and tastes. | 0:24:00 | 0:24:03 | |
They could remember their lives as caterpillars. | 0:24:03 | 0:24:07 | |
Now that strikes me as amazing. | 0:24:07 | 0:24:10 | |
It is amazing, Chris. | 0:24:14 | 0:24:17 | |
But what comes next, is just beautiful. | 0:24:17 | 0:24:20 | |
The chrysalis becomes translucent | 0:24:23 | 0:24:26 | |
and we get a tantalising glimpse of what is about to be revealed. | 0:24:26 | 0:24:30 | |
CREAKING | 0:24:38 | 0:24:42 | |
The caterpillar was perfectly built for its needs, | 0:25:03 | 0:25:07 | |
but now a new set of tools are on board. | 0:25:07 | 0:25:11 | |
The butterfly has a more refined taste for drinking nectar. | 0:25:11 | 0:25:15 | |
A long feeding tube replaces those chewing mouthparts. | 0:25:20 | 0:25:25 | |
It can extend deep into the nectar-rich reservoirs of a flower. | 0:25:25 | 0:25:30 | |
But the crowning glory is slowly revealing itself. | 0:25:30 | 0:25:34 | |
It's a vulnerable stage, | 0:25:44 | 0:25:46 | |
as the wings slowly fill with fluid. | 0:25:46 | 0:25:50 | |
The wings of butterflies possess some of the most dazzling colours | 0:26:13 | 0:26:18 | |
found in all nature. | 0:26:18 | 0:26:20 | |
Whether they serve as enticing advertisements, | 0:26:22 | 0:26:25 | |
warning signs or camouflage, | 0:26:25 | 0:26:27 | |
these brilliant, complex wings owe their beauty to their structure. | 0:26:27 | 0:26:33 | |
They're made up of thousands of tiny, delicate scales | 0:26:34 | 0:26:37 | |
that overlap like roof tiles. | 0:26:37 | 0:26:40 | |
It's these scales that give the wings their fabulous variety | 0:26:40 | 0:26:44 | |
of colours and patterns - | 0:26:44 | 0:26:47 | |
blacks and browns are created by melanin, | 0:26:47 | 0:26:49 | |
the same chemical pigment that makes us tan in summer, | 0:26:49 | 0:26:53 | |
while the blues, greens, reds are made by refraction of light, | 0:26:53 | 0:26:58 | |
giving the wing its iridescent shimmer. | 0:26:58 | 0:27:01 | |
And now the reason behind their extraordinary transformations | 0:27:06 | 0:27:10 | |
becomes clear. | 0:27:10 | 0:27:12 | |
As caterpillars, their only mission is to gorge themselves, | 0:27:12 | 0:27:16 | |
but in this, their adult stage, | 0:27:16 | 0:27:18 | |
they literally have one thing on their mind... | 0:27:18 | 0:27:21 | |
To find a mate and lay their eggs far and wide. | 0:27:24 | 0:27:28 | |
With just a few weeks in which to do this, | 0:27:28 | 0:27:31 | |
being built for flight buys time and speed. | 0:27:31 | 0:27:35 | |
Butterfly courtship is often beautiful - | 0:27:38 | 0:27:42 | |
a delicate confection, a dance on air, | 0:27:42 | 0:27:45 | |
and the most spectacular of all of these fluttering fantasies | 0:27:45 | 0:27:50 | |
is the courtship dance of the Silver-washed Fritillary. | 0:27:50 | 0:27:54 | |
The female flies in a dead-straight line | 0:28:09 | 0:28:12 | |
along the woodland track | 0:28:12 | 0:28:14 | |
and as she passes, she releases an aphrodisiac | 0:28:14 | 0:28:18 | |
from the tip of her abdomen. | 0:28:18 | 0:28:20 | |
Captivated, the male follows closely, | 0:28:23 | 0:28:26 | |
repeatedly looping under, over her, | 0:28:26 | 0:28:29 | |
showering her with pheromones from special glands on his wings. | 0:28:29 | 0:28:33 | |
She finally leads him to a clump of leaves high up in the oak tree | 0:28:42 | 0:28:46 | |
where they mate. | 0:28:46 | 0:28:48 | |
The Silver-washed Fritillary | 0:28:55 | 0:28:57 | |
is one of many butterflies to use pheromones, | 0:28:57 | 0:29:00 | |
but scientists still don't actually understand why. | 0:29:00 | 0:29:03 | |
It's much more common amongst their nocturnal cousins. | 0:29:03 | 0:29:06 | |
Let's hear it for moths. | 0:29:09 | 0:29:12 | |
Now, just because most but not all moths lack the bright colours | 0:29:12 | 0:29:16 | |
of their cousins the butterflies, | 0:29:16 | 0:29:18 | |
they're often considered poor relations. | 0:29:18 | 0:29:20 | |
But moths are not poor relations. We are rich in moths. | 0:29:20 | 0:29:25 | |
We have over 2,000 different species. | 0:29:25 | 0:29:28 | |
But because they can't use bright colours to attract a mate, | 0:29:28 | 0:29:31 | |
they have to use something else. | 0:29:31 | 0:29:34 | |
And that is where pheromones come in. | 0:29:34 | 0:29:37 | |
JAZZ MUSIC | 0:29:37 | 0:29:39 | |
To find out how moths meet mates in the dark, | 0:29:41 | 0:29:44 | |
Michaela is out in the woods with Dr Zoe Randall, | 0:29:44 | 0:29:48 | |
who's set up a moth trap. | 0:29:48 | 0:29:49 | |
-That's nice. -Let's hope we've got the moths. Oh, great! Look! | 0:29:49 | 0:29:54 | |
-There's quite a lot just on the sheet. And loads in there! -Yep. | 0:29:54 | 0:29:57 | |
Look, there's one here! Oh, that's a beautiful one. Look at that! | 0:29:57 | 0:30:01 | |
That's a Peach Blossom. | 0:30:01 | 0:30:03 | |
That's a gorgeous colour, isn't it, that little pink bit there. | 0:30:03 | 0:30:06 | |
Yeah, absolutely beautiful little moth. | 0:30:06 | 0:30:08 | |
Oh, and look at this one who looks like he's wearing Biggles flying glasses. | 0:30:08 | 0:30:13 | |
-He's fantastic! -And he's called a Spectacle. | 0:30:13 | 0:30:16 | |
-That's an easy one to remember. -Easy-peasy. | 0:30:16 | 0:30:18 | |
Look, there's an Ermine. In fact there's two. | 0:30:18 | 0:30:21 | |
-I just love how hairy their head looks. -Yeah. | 0:30:21 | 0:30:25 | |
And they get their names from when people used to wear ermines round the top of their coats. | 0:30:25 | 0:30:30 | |
Well, you can see why they get that name. | 0:30:30 | 0:30:32 | |
-Look at this. -Oh, yeah. | 0:30:32 | 0:30:34 | |
This one's a Pale Tussock and they have fantastic feathery antennae. | 0:30:34 | 0:30:38 | |
Now, the antennae are really interesting, aren't they, Zoe? | 0:30:38 | 0:30:41 | |
Cos that's what they use to smell. | 0:30:41 | 0:30:44 | |
And they have an incredible sense of smell, don't they? | 0:30:44 | 0:30:47 | |
That's right. The antennae are really feathered, | 0:30:47 | 0:30:51 | |
that increases the surface area to make them more sensitive | 0:30:51 | 0:30:54 | |
to moisture, humidity and female pheromones. | 0:30:54 | 0:30:59 | |
So how does the female pheromone thing work? Talk me through that. | 0:30:59 | 0:31:04 | |
Well, it's called "calling." | 0:31:04 | 0:31:06 | |
The female moth will release her pheromones in a plume, a bit like smoke from a fire. | 0:31:06 | 0:31:12 | |
Just like a perfume that then the male detects on his feathery antennae and finds her? | 0:31:12 | 0:31:18 | |
Yeah, that's right. | 0:31:18 | 0:31:20 | |
It has been shown that a male Emperor Moth detected a female up to five miles away. | 0:31:20 | 0:31:26 | |
Absolutely fascinating. | 0:31:26 | 0:31:28 | |
It's like a nice bit of nail art, that one at the moment! | 0:31:31 | 0:31:35 | |
-Shall we see what else there is? -Yeah. | 0:31:35 | 0:31:37 | |
When it comes to running a light trap it does seem to be mainly males. | 0:31:37 | 0:31:41 | |
And you'll get between 200-300 different moth species | 0:31:41 | 0:31:46 | |
in an average back garden. | 0:31:46 | 0:31:49 | |
They're absolutely stunning. | 0:31:49 | 0:31:50 | |
It's always a joy to do a moth trap, | 0:31:50 | 0:31:53 | |
because you realise just how beautiful they are. | 0:31:53 | 0:31:58 | |
MUSIC: "Isn't She Lovely" by Stevie Wonder | 0:31:58 | 0:32:00 | |
Much of what we know today about butterflies and moths is due to the Victorians. | 0:32:10 | 0:32:16 | |
Back then there was an insatiable desire to find out more about the natural world | 0:32:16 | 0:32:21 | |
and collecting specimens became a major hobby. | 0:32:21 | 0:32:25 | |
The place to go for kit was Watkins & Doncaster, | 0:32:27 | 0:32:30 | |
suppliers of entomological equipment since 1874. | 0:32:30 | 0:32:35 | |
Amy Wells is the third generation in her family to run the business. | 0:32:35 | 0:32:41 | |
I have spent much of my life | 0:32:41 | 0:32:43 | |
buying exciting things from your company ever since I was about six. | 0:32:43 | 0:32:48 | |
That's fantastic to know. | 0:32:48 | 0:32:50 | |
-But where was it? What did it look like? -I've got some old photos. | 0:32:50 | 0:32:53 | |
Oh, that's great, isn't it! You can practically hear the traffic behind. | 0:32:53 | 0:32:57 | |
Yes. It was based up in the Strand. | 0:32:57 | 0:32:59 | |
You would have gone in through a little door and up some windy stairs | 0:32:59 | 0:33:02 | |
and it was on about three or four floors. | 0:33:02 | 0:33:04 | |
And what else have we got here? What's happening here? | 0:33:04 | 0:33:07 | |
-This is my grandfather. -Look at that hair! -It was like an Aladdin's cave. | 0:33:07 | 0:33:12 | |
It must've been. I can imagine as a schoolkid, | 0:33:12 | 0:33:14 | |
-me or Chris Packham we'd be just... -SHE LAUGHS | 0:33:14 | 0:33:17 | |
Oh, look, here we are! This probably is Chris Packham. | 0:33:17 | 0:33:20 | |
SHE LAUGHS | 0:33:20 | 0:33:22 | |
So back then, what sort of things were you selling? | 0:33:22 | 0:33:26 | |
Well, we've got some old equipment to show you. This is an old net. | 0:33:26 | 0:33:29 | |
-You can see it was made of bamboo originally. -Oh, I see! | 0:33:29 | 0:33:33 | |
Now it would be aluminium or something. And what else have you got there? Bits and bobs here. | 0:33:33 | 0:33:38 | |
-Some look a bit frightening. -SHE LAUGHS | 0:33:38 | 0:33:40 | |
Yes, the collector would go out with his satchel filled with jars like this. | 0:33:40 | 0:33:44 | |
-A killing jar. -Yes. | 0:33:44 | 0:33:47 | |
Filled with cotton wool or plaster of Paris with a nasty chemical | 0:33:47 | 0:33:50 | |
such as cyanide in the bottom to kill the insect. | 0:33:50 | 0:33:52 | |
-They used cyanide to kill them? -Yes. -So that's a killing jar. | 0:33:52 | 0:33:55 | |
-It's a killing jar. -Then what happens? | 0:33:55 | 0:33:57 | |
He would have come home, popped them into a relaxing tin. | 0:33:57 | 0:34:00 | |
Cos it's dead by then, is it? | 0:34:00 | 0:34:02 | |
-It is dead, but they go a bit stiff when they're dead. -Right. | 0:34:02 | 0:34:05 | |
So you have to flatten them out? | 0:34:05 | 0:34:08 | |
OK, so they were relaxed, what happens after that? | 0:34:08 | 0:34:11 | |
Oh, here it is. | 0:34:11 | 0:34:12 | |
This is a setting board and they would be pinned onto that | 0:34:12 | 0:34:16 | |
and then the wings would be manipulated to where he wanted them. | 0:34:16 | 0:34:20 | |
-And then finally, I guess, they go into something like this? -Yes. | 0:34:20 | 0:34:23 | |
And after that, once they're dry, | 0:34:23 | 0:34:26 | |
they would go into a drawer or a case for the wall to display. | 0:34:26 | 0:34:29 | |
Gosh! I mean, it's beautiful, but it's also a bit worrying, | 0:34:29 | 0:34:33 | |
because these are all the same, aren't they? | 0:34:33 | 0:34:35 | |
I mean, why collect so many of the same species? | 0:34:35 | 0:34:39 | |
Victorians wanted hordes of all the same. | 0:34:39 | 0:34:42 | |
You would have a cabinet of drawers and you would have one drawer | 0:34:42 | 0:34:46 | |
with rows upon rows of exactly the same butterfly. | 0:34:46 | 0:34:49 | |
-How bizarre! Shall we have a look at the next one down? -Hmm. | 0:34:49 | 0:34:52 | |
-This one's got some moths in it. -Oh, some moths. Some Tigers. Look! | 0:34:52 | 0:34:56 | |
-And they're all the same again! -Yeah. -It is a bit...weird to us. | 0:34:56 | 0:35:02 | |
I mean, and this level of collection, I mean, | 0:35:02 | 0:35:04 | |
-a whole trainloads of people used to go into the New Forest, didn't they? -That's right. | 0:35:04 | 0:35:08 | |
I mean, did that have a perceptible effect on the numbers | 0:35:08 | 0:35:12 | |
of butterflies back then? | 0:35:12 | 0:35:14 | |
Well, back then, the habitat was so different from what it is today. | 0:35:14 | 0:35:17 | |
It didn't actually have an impact on the population of the species. | 0:35:17 | 0:35:21 | |
All these people going out, just imagine. | 0:35:21 | 0:35:23 | |
-But then, times have changed. -Yes, thankfully, we've moved on. | 0:35:23 | 0:35:27 | |
Cos now, Watkins and Doncaster, as a company, | 0:35:27 | 0:35:30 | |
have got quite heavily involved in conservation now. | 0:35:30 | 0:35:32 | |
We were one of the founding institutions to start Butterfly Conservation. | 0:35:32 | 0:35:38 | |
-The one Butterfly Conservation that we have now? -Yes, that's right. | 0:35:38 | 0:35:41 | |
So you're helping to try and conserve dwindling populations of butterflies and moths. | 0:35:41 | 0:35:45 | |
Yeah, and know what we've got and where. | 0:35:45 | 0:35:47 | |
Thankfully, nowadays, we don't collect, pin and stick. | 0:35:50 | 0:35:55 | |
The modern way is to capture them with a camera. | 0:35:55 | 0:35:58 | |
Today's equivalent of the Victorian enthusiast is Matthew Oates, | 0:36:01 | 0:36:06 | |
the National Trust butterfly expert, | 0:36:06 | 0:36:08 | |
and he's brought me to this Cotswold coomb | 0:36:08 | 0:36:11 | |
in search of one of our smallest and rarest butterflies. | 0:36:11 | 0:36:14 | |
We come here to see a butterfly | 0:36:16 | 0:36:18 | |
referred to as His Grace The Duke Of Burgundy. | 0:36:18 | 0:36:22 | |
-It's a very elegant name. -It's a wonderful name. | 0:36:22 | 0:36:24 | |
But because they're so small, | 0:36:24 | 0:36:26 | |
I mean, they're not much bigger than a thumb nail, | 0:36:26 | 0:36:28 | |
they are really very hard to spot. | 0:36:28 | 0:36:31 | |
-So it's binoculars. -It's binoculars | 0:36:31 | 0:36:34 | |
and scan and search. | 0:36:34 | 0:36:36 | |
It's the perfect spot. | 0:36:38 | 0:36:40 | |
It's very sheltered, it's out of the wind, most butterflies hate wind. | 0:36:40 | 0:36:46 | |
It stops them mating. | 0:36:46 | 0:36:48 | |
THEY LAUGH | 0:36:48 | 0:36:49 | |
If it's windy, you can't mate in a howling gale. | 0:36:49 | 0:36:52 | |
Of course, you can't, can you? | 0:36:52 | 0:36:54 | |
Welcome to the world of butterflying. Ooh! | 0:36:54 | 0:36:57 | |
-There's a little twig of hawthorn or something. -Uh-huh. | 0:36:58 | 0:37:04 | |
-Is that His Grace? -Yeah, there we go. -Look at that! | 0:37:04 | 0:37:07 | |
I'm going to surprise you as to how small he actually is. | 0:37:09 | 0:37:14 | |
Look at that, there's His Grace! | 0:37:14 | 0:37:16 | |
-It's absolutely tiny. -It's tiny! | 0:37:16 | 0:37:18 | |
But it's beautifully marked. | 0:37:18 | 0:37:21 | |
Adorable underside, this meditation of silver and browns. | 0:37:21 | 0:37:25 | |
Do not be fooled, it looks elegant and gentle | 0:37:25 | 0:37:29 | |
but it's a vicious little thug... | 0:37:29 | 0:37:31 | |
THEY LAUGH | 0:37:31 | 0:37:32 | |
..waiting to erupt. He will launch attacks | 0:37:32 | 0:37:36 | |
against anything invading his air space, | 0:37:36 | 0:37:39 | |
anything, any flying object - a fly, a bee, another butterfly, | 0:37:39 | 0:37:43 | |
another male Duke Of Burgundy, | 0:37:43 | 0:37:45 | |
and that's punch-up time. | 0:37:45 | 0:37:46 | |
They're not very well-behaved. | 0:37:46 | 0:37:48 | |
Oh, dear! How do they have a punch-up? | 0:37:48 | 0:37:50 | |
-Do they bang their wings together or...? -No, they don't, actually, | 0:37:50 | 0:37:52 | |
but they do an aerial combat and they spiral up together | 0:37:52 | 0:37:56 | |
and F and B, I presume, at each other and then, they separate | 0:37:56 | 0:37:59 | |
and go back to their perching places, and it all happens again. | 0:37:59 | 0:38:03 | |
-Here he goes. -Here he comes. | 0:38:03 | 0:38:05 | |
Like you said, the instant the sun's out, look at that! | 0:38:05 | 0:38:08 | |
What he's trying to do now is follow warmth from the sun using his wings. | 0:38:08 | 0:38:13 | |
The wings don't absorb heat themselves, | 0:38:13 | 0:38:16 | |
but they funnel the heat onto the body. | 0:38:16 | 0:38:18 | |
And he needs that cos he needs to warm up his flight muscles, | 0:38:18 | 0:38:21 | |
so he's ready like a coiled spring to... | 0:38:21 | 0:38:23 | |
To launch himself into the...into the air. | 0:38:23 | 0:38:26 | |
THEY CHUCKLE | 0:38:26 | 0:38:28 | |
So we're looking here at a really rather rare butterfly. | 0:38:28 | 0:38:31 | |
Sadly, it's now Britain's most rapidly-declining butterfly. | 0:38:31 | 0:38:36 | |
And I find that really quite horrifying. | 0:38:36 | 0:38:41 | |
Why is that? Why has it declined? | 0:38:41 | 0:38:43 | |
This really is, in many ways, | 0:38:43 | 0:38:45 | |
a very fussy butterfly. | 0:38:45 | 0:38:47 | |
Its caterpillars will only feed on the leaves of primrose or cowslip. | 0:38:47 | 0:38:52 | |
And they need plants whose roots are in the shade | 0:38:52 | 0:38:56 | |
so the leaves stay green while the caterpillars are feeding. | 0:38:56 | 0:39:00 | |
Gosh, that is sensitive. | 0:39:00 | 0:39:02 | |
So not just any old cowslip or primrose, | 0:39:02 | 0:39:04 | |
it has to be exactly the right one! | 0:39:04 | 0:39:06 | |
Yeah, this is butterflies for you all round. | 0:39:06 | 0:39:08 | |
That, sadly, is the type of story that's playing out in the lives | 0:39:15 | 0:39:20 | |
of so many butterflies and moths. | 0:39:20 | 0:39:22 | |
They're so super specialised, they live on a knife edge, | 0:39:23 | 0:39:27 | |
where the slightest change can make them disappear. | 0:39:27 | 0:39:30 | |
If the key to their success | 0:39:32 | 0:39:33 | |
is getting the right food plant for their hungry caterpillars, | 0:39:33 | 0:39:37 | |
then, should that plant vanish, | 0:39:37 | 0:39:39 | |
the butterfly will very quickly follow. | 0:39:39 | 0:39:41 | |
And a great variety of plants have been disappearing | 0:39:44 | 0:39:48 | |
from our countryside. | 0:39:48 | 0:39:49 | |
Over the past few decades, | 0:39:53 | 0:39:55 | |
three quarters of our butterflies have declined | 0:39:55 | 0:39:57 | |
and two thirds of our larger moths. | 0:39:57 | 0:40:00 | |
A massive loss. | 0:40:00 | 0:40:02 | |
The sad fact is butterflies and moths ARE dying out. | 0:40:04 | 0:40:08 | |
Even ones that used to be common several years ago. | 0:40:13 | 0:40:16 | |
There are a number of reasons why. | 0:40:21 | 0:40:23 | |
As the traditional ways of managing our woodland vanish, | 0:40:23 | 0:40:26 | |
so do the open woodland rides and glades | 0:40:26 | 0:40:30 | |
that butterflies love so much. | 0:40:30 | 0:40:32 | |
Intensive farming, | 0:40:34 | 0:40:36 | |
encouraged after the Second World War with good intentions, | 0:40:36 | 0:40:39 | |
has led to the disappearance of many wild plants | 0:40:39 | 0:40:43 | |
that butterflies and moths rely on for caterpillar food. | 0:40:43 | 0:40:46 | |
And building development means that what natural habitat does remain | 0:40:48 | 0:40:52 | |
is in isolated fragments. | 0:40:52 | 0:40:54 | |
But there's another culprit | 0:40:59 | 0:41:01 | |
and one that's far more difficult to predict. | 0:41:01 | 0:41:03 | |
The weather. | 0:41:05 | 0:41:07 | |
Relentless rain prevents newly-emerged adults | 0:41:08 | 0:41:11 | |
from drying out their wings, | 0:41:11 | 0:41:13 | |
whilst strong winds make it impossible to fly to find a mate | 0:41:13 | 0:41:18 | |
in the short time they have to do this. | 0:41:18 | 0:41:21 | |
For creatures already in decline, | 0:41:22 | 0:41:24 | |
our recent wet summers have been devastating. | 0:41:24 | 0:41:27 | |
This summer, we need to step up our efforts | 0:41:30 | 0:41:33 | |
to make the countryside more butterfly-friendly | 0:41:33 | 0:41:37 | |
and Michaela has found the perfect spot to make a start. | 0:41:37 | 0:41:41 | |
Look at this, it's absolutely beautiful! | 0:41:53 | 0:41:56 | |
Gorgeous wildflowers as far as the eye can see. | 0:41:56 | 0:42:00 | |
This is Magdalen Hill Down, in Hampshire. | 0:42:03 | 0:42:06 | |
An area of natural chalk downland that used to be farmland. | 0:42:06 | 0:42:10 | |
20 years ago, all ploughing stopped | 0:42:13 | 0:42:16 | |
and the small hillside was restored | 0:42:16 | 0:42:19 | |
by conservationists to its former glory. | 0:42:19 | 0:42:21 | |
There's an abundance of variety in this meadow - | 0:42:23 | 0:42:26 | |
there's ox-eye daisy, | 0:42:26 | 0:42:28 | |
hawkbit, sainfoin, | 0:42:28 | 0:42:31 | |
flowering marjoram, which has fantastic smell... | 0:42:31 | 0:42:34 | |
I've even spotted a few orchids. | 0:42:34 | 0:42:36 | |
And for nectar-loving insects like butterflies and moths, | 0:42:36 | 0:42:40 | |
this is an incredible natural banquet. | 0:42:40 | 0:42:43 | |
Today, wildflower meadows like this are very rare, | 0:42:47 | 0:42:50 | |
but for thousands of years, | 0:42:50 | 0:42:52 | |
they were an important part of the countryside. | 0:42:52 | 0:42:55 | |
They were managed in more traditional ways, | 0:42:55 | 0:42:57 | |
through grazing and haymaking, | 0:42:57 | 0:42:59 | |
to provide feed for farm animals over the long winter months. | 0:42:59 | 0:43:03 | |
Some in Wales were kept as a kind of hospital field | 0:43:03 | 0:43:07 | |
where sick or injured animals could feed on the rich flower pasture | 0:43:07 | 0:43:11 | |
to make a speedier recovery. | 0:43:11 | 0:43:13 | |
Sadly, a meadow like this is a rare sight these days, | 0:43:15 | 0:43:19 | |
but there are plans in place to change that. | 0:43:19 | 0:43:22 | |
Government schemes hope to encourage farmers to create meadows | 0:43:24 | 0:43:28 | |
or, at least, leave wildflower margins at the edge of their fields. | 0:43:28 | 0:43:32 | |
And there's even royal support for them. | 0:43:33 | 0:43:35 | |
To celebrate the Queen's Coronation, | 0:43:35 | 0:43:38 | |
a nationwide project called Coronation Meadows | 0:43:38 | 0:43:41 | |
aims to create a wildflower meadow in every county across the UK. | 0:43:41 | 0:43:46 | |
It's all very encouraging, | 0:43:49 | 0:43:51 | |
but our moths and butterflies need to socialise and quickly. | 0:43:51 | 0:43:55 | |
And isolated pockets of habitat like this one need to be linked up. | 0:43:55 | 0:43:59 | |
And maybe the answer lies down there. | 0:43:59 | 0:44:03 | |
Roads snake everywhere across our countryside. | 0:44:06 | 0:44:09 | |
And if we left the verges to grow wild, | 0:44:10 | 0:44:12 | |
it could give island-hopping butterflies, | 0:44:12 | 0:44:15 | |
as well as other types of wildlife, | 0:44:15 | 0:44:18 | |
the means to spread their wings. | 0:44:18 | 0:44:20 | |
We can make space for animals like moths and butterflies | 0:44:21 | 0:44:24 | |
and hopefully reverse their dramatic decline. | 0:44:24 | 0:44:28 | |
And if that means turning roads like this into butterfly superhighways, | 0:44:28 | 0:44:32 | |
well, then, I, for one, am all for it. | 0:44:32 | 0:44:35 | |
Thankfully, Michaela is not alone. | 0:44:38 | 0:44:41 | |
Even though the sheer fussiness of these creatures | 0:44:41 | 0:44:43 | |
doesn't make it easy, people are doing things to help. | 0:44:43 | 0:44:47 | |
By cropping the chalk and limestone grassland | 0:44:47 | 0:44:49 | |
in the South Downs National Park, | 0:44:49 | 0:44:52 | |
the Adonis Blue is thriving. | 0:44:52 | 0:44:55 | |
Increasingly open fenland in the Norfolk Broads is great news | 0:44:57 | 0:45:00 | |
for our magnificent Swallowtail butterfly. | 0:45:00 | 0:45:04 | |
And thanks to wardens in Blean Woods, in Kent, | 0:45:07 | 0:45:10 | |
the Heath Fritillary, once close to extinction, | 0:45:10 | 0:45:13 | |
continues to create one of our biggest butterfly spectacles. | 0:45:13 | 0:45:18 | |
And they're not the only champions of British butterflies. | 0:45:18 | 0:45:23 | |
There's a small army of amateur naturalists | 0:45:23 | 0:45:27 | |
closely following the lives of butterflies and moths | 0:45:27 | 0:45:30 | |
right across the UK. | 0:45:30 | 0:45:32 | |
And one of those has created a special place for butterflies. | 0:45:32 | 0:45:37 | |
It's kind of like he's created the whole of the United Kingdom in miniature. | 0:45:37 | 0:45:42 | |
Except when I say miniature, that's not quite right. | 0:45:42 | 0:45:46 | |
Clive Farrell is a man who likes to think big. | 0:45:53 | 0:45:57 | |
When he decided, 25 years ago, | 0:45:59 | 0:46:01 | |
to make his land a haven for butterflies, | 0:46:01 | 0:46:04 | |
he set about creating all the different habitats | 0:46:04 | 0:46:07 | |
that our native species need. | 0:46:07 | 0:46:10 | |
I've been lucky enough to indulge my butterfly fantasies | 0:46:10 | 0:46:14 | |
on a gigantic scale. | 0:46:14 | 0:46:16 | |
There's acres of meadow, | 0:46:18 | 0:46:21 | |
specially raised chalk banks, | 0:46:21 | 0:46:23 | |
shady pools, EVEN a recreation of a sandy beach. | 0:46:23 | 0:46:27 | |
Wow! | 0:46:37 | 0:46:38 | |
How many acres of butterfly heaven here? | 0:46:38 | 0:46:41 | |
Well, there's 100 acres altogether. | 0:46:41 | 0:46:44 | |
These were put up by the local Scouts with their special knots, you see. | 0:46:51 | 0:46:54 | |
-Oh, great! -And we grow hops up them. | 0:46:54 | 0:46:57 | |
And this is the best food plant for the Comma butterfly. | 0:46:57 | 0:47:00 | |
-Commas. -The Commas. -Beautiful! | 0:47:00 | 0:47:02 | |
And here, Clive, you've got buddleia here, | 0:47:02 | 0:47:04 | |
it's hard to see at the moment, but it seems to go on for miles. | 0:47:04 | 0:47:08 | |
-Yes, I think it's the longest buddleia hedge in the world. -Is it? | 0:47:08 | 0:47:11 | |
Certainly in Britain. | 0:47:11 | 0:47:13 | |
And when that's in flower, | 0:47:13 | 0:47:15 | |
it's as if a net's been stretched across the field | 0:47:15 | 0:47:18 | |
to catch every passing butterfly. | 0:47:18 | 0:47:21 | |
You think big, don't you, Clive? | 0:47:21 | 0:47:22 | |
THEY CHUCKLE | 0:47:22 | 0:47:24 | |
All the effort Clive and his team put in here is reaping rewards. | 0:47:28 | 0:47:32 | |
Out of our 59 butterfly species, | 0:47:32 | 0:47:35 | |
he's seen a whopping 39 of them, | 0:47:35 | 0:47:38 | |
all enjoying his patch. | 0:47:38 | 0:47:40 | |
Green Hairstreak! It's a Green Hairstreak! It's green! | 0:47:43 | 0:47:46 | |
Where's it gone? | 0:47:46 | 0:47:48 | |
A Green Hairstreak, incredibly rare. What does it feed on? | 0:47:48 | 0:47:52 | |
-Dyer's-greenweed. -Dyer's-greenweed, which is all around us. | 0:47:52 | 0:47:55 | |
Another example, get the plant right and they will come. | 0:47:55 | 0:47:59 | |
-Yes. -Never seen one. -You've never seen one? -Never seen one, no. | 0:47:59 | 0:48:03 | |
Oh! | 0:48:03 | 0:48:04 | |
That's a Six-spot Burnet Moth. | 0:48:09 | 0:48:12 | |
This is probably hatched out today or yesterday. | 0:48:12 | 0:48:16 | |
Can you tell how old they are by the sort of lustre of the colours? | 0:48:16 | 0:48:21 | |
You can, to some extent. | 0:48:21 | 0:48:23 | |
They get a bit battered and the scales tend to wear off in old age. | 0:48:23 | 0:48:29 | |
A bit like us, really. | 0:48:29 | 0:48:30 | |
THEY LAUGH | 0:48:30 | 0:48:32 | |
While he's got me here, Clive wants my help sowing, not seeds, | 0:48:34 | 0:48:39 | |
but caterpillars in a patch of golden stinging nettles. | 0:48:39 | 0:48:43 | |
So, Clive, how do we do this? | 0:48:45 | 0:48:46 | |
Do we try and put individual caterpillars on the nettles | 0:48:46 | 0:48:49 | |
or just lay this on? | 0:48:49 | 0:48:51 | |
No, you can put them on as a team, because when they're small, | 0:48:51 | 0:48:53 | |
they tend to feed together. | 0:48:53 | 0:48:56 | |
Look at them, they're a bit peckish. | 0:48:56 | 0:48:59 | |
Ouch! | 0:48:59 | 0:49:00 | |
HE LAUGHS | 0:49:00 | 0:49:02 | |
Ah! They may be golden nettles but they still sting! | 0:49:02 | 0:49:04 | |
THEY LAUGH | 0:49:04 | 0:49:07 | |
Look at that! | 0:49:07 | 0:49:09 | |
That one let out a little bit of silk to drop off my finger. | 0:49:09 | 0:49:12 | |
Yes, they're able to swing on their silk ropes. | 0:49:12 | 0:49:15 | |
And there you are, you see, they're hanging on on their... | 0:49:15 | 0:49:18 | |
Look at that! Like a Christmas tree! | 0:49:18 | 0:49:20 | |
They're abseiling down on their silken threads. | 0:49:20 | 0:49:23 | |
These are caterpillars of the Peacock butterfly. | 0:49:23 | 0:49:27 | |
And it's my favourite British butterfly | 0:49:27 | 0:49:30 | |
and I like the eyespots on the wings. | 0:49:30 | 0:49:33 | |
They look slightly evil, actually. | 0:49:35 | 0:49:37 | |
HE LAUGHS | 0:49:37 | 0:49:38 | |
If you were a caterpillar, you want to look a bit evil. You want to survive. | 0:49:38 | 0:49:41 | |
-Yeah, the last thing you want to look is nice and friendly. -And edible. | 0:49:41 | 0:49:45 | |
And edible, that is the death knell. | 0:49:45 | 0:49:47 | |
This is designed to show you that all hope is not lost. | 0:49:49 | 0:49:53 | |
You can create the right habitat for them | 0:49:53 | 0:49:56 | |
and they will return under their own steam. | 0:49:56 | 0:50:00 | |
What a glorious thing. | 0:50:00 | 0:50:02 | |
I imagine you on a summer's evening with a glass of fruit juice | 0:50:02 | 0:50:05 | |
sitting down here and watching the fruit of all your labours. | 0:50:05 | 0:50:08 | |
A glass of wine, more likely. | 0:50:08 | 0:50:09 | |
How wonderful! | 0:50:09 | 0:50:11 | |
Clive's passion for butterflies has become a hobby | 0:50:13 | 0:50:17 | |
that's taken over his life. | 0:50:17 | 0:50:18 | |
And his back garden was just the start. | 0:50:18 | 0:50:21 | |
Letting his creative juices flow, | 0:50:21 | 0:50:23 | |
he started up butterfly projects around the country | 0:50:23 | 0:50:27 | |
as well as the very first butterfly house in the United States. | 0:50:27 | 0:50:31 | |
The scale of Clive's ambition is mind-boggling, | 0:50:38 | 0:50:42 | |
but not all of us have got the time or the resources | 0:50:42 | 0:50:46 | |
to do what he is doing for butterfly conservation. | 0:50:46 | 0:50:51 | |
Clive thinks big, BUT small can be beautiful, | 0:50:51 | 0:50:56 | |
as I think we're just about to find out. | 0:50:56 | 0:51:02 | |
I've come to an ordinary street in Somerset, | 0:51:05 | 0:51:07 | |
because I've heard that Colin Higgins, a keen gardener, | 0:51:07 | 0:51:12 | |
has some ingenious ideas for attracting and supporting butterflies and moths | 0:51:12 | 0:51:16 | |
in his own backyard. | 0:51:16 | 0:51:19 | |
You've got a Hawthorn hedge, a really, really valuable native plant | 0:51:19 | 0:51:23 | |
for lots and lots of different types of moths. | 0:51:23 | 0:51:27 | |
You'll get certain types of pugs, all sorts of different moths | 0:51:27 | 0:51:30 | |
and the caterpillars will also feed on the leaves. | 0:51:30 | 0:51:32 | |
We've got a butterfly, we've got a Small Tortoiseshell there | 0:51:32 | 0:51:35 | |
on the Sweet William. | 0:51:35 | 0:51:37 | |
Oh, what was that? We're surrounded by them now. | 0:51:37 | 0:51:39 | |
That was a Small Tortoiseshell as well. | 0:51:39 | 0:51:42 | |
That butterfly is very happy in that plant, there's obviously a lot of nectar in there. | 0:51:42 | 0:51:46 | |
And when you go to the garden centre, you have to be really, really careful what you buy, | 0:51:46 | 0:51:49 | |
because there's a lot of plants that look pretty | 0:51:49 | 0:51:52 | |
and on paper are good for butterflies and pollinators, | 0:51:52 | 0:51:54 | |
but they might be sterile. | 0:51:54 | 0:51:56 | |
Spend time and watch what lands on it, see if the bees land on it, | 0:51:56 | 0:51:59 | |
see if the butterflies land on it. | 0:51:59 | 0:52:00 | |
-Watch what settles and actually feeds on the plant. -Very interesting. | 0:52:00 | 0:52:03 | |
-That Tortoiseshell's still there! -It is still there. | 0:52:03 | 0:52:06 | |
Obviously, that's a proof of what you've just said. | 0:52:06 | 0:52:08 | |
Getting plenty to feed on, or else, it'd be gone, wouldn't it? | 0:52:08 | 0:52:11 | |
It's absolutely humming, buzzing with life. | 0:52:11 | 0:52:13 | |
Everywhere you go, you will see insects, | 0:52:13 | 0:52:15 | |
you'll see butterflies. | 0:52:15 | 0:52:17 | |
We also have quite a lot of play equipment, | 0:52:17 | 0:52:20 | |
cos I have a young daughter, and what we try to do | 0:52:20 | 0:52:23 | |
is incorporate wildlife plants into the swings. | 0:52:23 | 0:52:26 | |
You can see the clematis there. | 0:52:26 | 0:52:28 | |
So she's surrounded by butterflies and things while she's on the swing? | 0:52:28 | 0:52:31 | |
Exactly, she'll often be out here looking for such things. | 0:52:31 | 0:52:33 | |
-You've got to get the youngsters involved. -Very important. -Got to get the youngsters involved! | 0:52:33 | 0:52:38 | |
Ah, nettles, very important? | 0:52:42 | 0:52:46 | |
Absolutely crucial to butterflies. | 0:52:46 | 0:52:49 | |
Many of our species lay their eggs on the nettle. | 0:52:49 | 0:52:52 | |
The big problem for us is it is a stinger, it stings, | 0:52:52 | 0:52:54 | |
and with young children, it can be quite a problem. | 0:52:54 | 0:52:57 | |
We've got round this by letting them grow up the hedge | 0:52:57 | 0:53:00 | |
-through some of the other bushes. -What a great idea! | 0:53:00 | 0:53:04 | |
You've thought this through, you have! | 0:53:04 | 0:53:06 | |
You've made a real little haven here. | 0:53:08 | 0:53:11 | |
Not an enormous garden, but if you were a passing butterfly... | 0:53:11 | 0:53:14 | |
Yes, we quite often have moths and butterflies | 0:53:14 | 0:53:16 | |
lay their eggs in the rough grass, | 0:53:16 | 0:53:18 | |
the Ringlet, the Meadow Brown, the Speckled Wood, | 0:53:18 | 0:53:21 | |
and they all lay their eggs in the rough grass. | 0:53:21 | 0:53:24 | |
-Look down here! -We've got... | 0:53:24 | 0:53:26 | |
It's empty, unfortunately, but there's a chrysalis from a butterfly. | 0:53:26 | 0:53:29 | |
I'm thinking that maybe a Small Tortoiseshell, but I'm not positive about that. | 0:53:29 | 0:53:33 | |
How beautiful that is! | 0:53:33 | 0:53:34 | |
Now, behind every great garden is a perfect spot | 0:53:39 | 0:53:43 | |
for the overwintering butterfly. | 0:53:43 | 0:53:45 | |
Now, you see, a lot...this garden is immaculate | 0:53:47 | 0:53:50 | |
and here's your shed. I love it! | 0:53:50 | 0:53:52 | |
You don't get an immaculate garden by having a tidy shed, do you? | 0:53:52 | 0:53:55 | |
No, it's perfect, this, isn't it? | 0:53:55 | 0:53:57 | |
Cos there's places in here, any number of places that a butterfly can get in and... | 0:53:57 | 0:54:00 | |
Yeah, they get in underneath the roof | 0:54:00 | 0:54:03 | |
and we do get butterflies in there in winter time. | 0:54:03 | 0:54:05 | |
One of the key things you need to try and do | 0:54:05 | 0:54:08 | |
is keep the spider webs down, | 0:54:08 | 0:54:09 | |
cos the spiders will predate the butterflies when they're hibernating over the winter. | 0:54:09 | 0:54:14 | |
Of course, I never thought of that. In my shed, I might clean some of the webs out. | 0:54:14 | 0:54:18 | |
He's done a superb job, but in many ways, | 0:54:24 | 0:54:28 | |
Clive's garden is a fairly normal garden | 0:54:28 | 0:54:31 | |
and perhaps that's the point. | 0:54:31 | 0:54:33 | |
All our gardens have got something for butterflies. | 0:54:33 | 0:54:36 | |
It can be as simple as somewhere to perch to sun yourself, | 0:54:36 | 0:54:39 | |
it could be some rough scrub like this to hide away in, | 0:54:39 | 0:54:42 | |
very good for caterpillars, | 0:54:42 | 0:54:43 | |
or it could be a nectar-rich border like this, full of delicious food. | 0:54:43 | 0:54:49 | |
Or maybe just a garden shed to hide in and hibernate over the winter. | 0:54:49 | 0:54:53 | |
For all of us, a little effort | 0:54:53 | 0:54:56 | |
can make a huge difference to the butterflies in our garden. | 0:54:56 | 0:55:00 | |
So there we are. | 0:55:07 | 0:55:09 | |
We've learnt these tiny winged jewels | 0:55:09 | 0:55:11 | |
lead extraordinary and intriguing lives... | 0:55:11 | 0:55:15 | |
..that their requirements are so exacting, so super fussy, | 0:55:17 | 0:55:22 | |
right now, they're struggling to survive | 0:55:22 | 0:55:25 | |
in our ever-changing countryside. | 0:55:25 | 0:55:28 | |
But all is not lost. | 0:55:28 | 0:55:30 | |
We've seen what big effects small changes can have. | 0:55:30 | 0:55:34 | |
So now is the time to act. | 0:55:34 | 0:55:37 | |
This summer is the BBC's Summer Of Wildlife, | 0:55:39 | 0:55:43 | |
and we want to encourage you to get out | 0:55:43 | 0:55:46 | |
and meet our wonderful wild neighbours for yourselves. | 0:55:46 | 0:55:51 | |
Right now is the perfect time to enjoy our butterflies and moths. | 0:55:51 | 0:55:55 | |
So we've got lots of extra things for you. | 0:55:55 | 0:55:58 | |
Straight after this show, | 0:56:01 | 0:56:03 | |
press the red button or go to the Summer Of Wildlife website, | 0:56:03 | 0:56:07 | |
where Nick Baker is hosting a special live event | 0:56:07 | 0:56:11 | |
all about butterflies and moths, | 0:56:11 | 0:56:13 | |
tonight and throughout this weekend. | 0:56:13 | 0:56:16 | |
Also on the website, there's lots more about butterflies and moths - | 0:56:16 | 0:56:20 | |
identification guides, wildlife gardening tips | 0:56:20 | 0:56:24 | |
and a guide to our wonderful wildflower meadows. | 0:56:24 | 0:56:28 | |
If you want to get really close to butterflies and moths, | 0:56:29 | 0:56:33 | |
like I have, there are loads of special events going on, | 0:56:33 | 0:56:36 | |
all around the UK, being run by many different wildlife organisations. | 0:56:36 | 0:56:41 | |
These are happening THIS weekend and throughout the summer. | 0:56:43 | 0:56:46 | |
It's incredibly easy to find out what's going on near you. | 0:56:47 | 0:56:51 | |
Just go to the website, | 0:56:52 | 0:56:54 | |
find the 'Things To Do' section and put in your postcode. | 0:56:54 | 0:56:57 | |
You'll get all the details you need. | 0:56:58 | 0:57:00 | |
Finally, if you really want to make a difference | 0:57:02 | 0:57:06 | |
and do your bit to help, | 0:57:06 | 0:57:07 | |
why not join me on the Big Butterfly Count? | 0:57:07 | 0:57:11 | |
It's a huge, nationwide survey of our butterflies and moths | 0:57:11 | 0:57:16 | |
that will help scientists and conservationists | 0:57:16 | 0:57:19 | |
understand how they're faring and how we can best look after them. | 0:57:19 | 0:57:23 | |
Anyone can take part, it's really easy and quick. | 0:57:23 | 0:57:26 | |
And I can assure you the information you contribute will really count. | 0:57:26 | 0:57:33 | |
It's going on for the next month or so, so do PLEASE get involved. | 0:57:33 | 0:57:39 | |
The details and links you need | 0:57:39 | 0:57:41 | |
for all of our special butterfly and moth activities | 0:57:41 | 0:57:44 | |
are on the website - | 0:57:44 | 0:57:46 | |
Butterflies and moths add dazzling beauty and colour to our gardens | 0:57:56 | 0:58:02 | |
and the entire countryside, | 0:58:02 | 0:58:04 | |
but they're vulnerable to the slightest change. | 0:58:04 | 0:58:07 | |
They're very much creatures of boom and bust. | 0:58:07 | 0:58:10 | |
But by finding out more about their needs, | 0:58:10 | 0:58:13 | |
we might be able to help them, | 0:58:13 | 0:58:15 | |
and right now, they really do need our help. | 0:58:15 | 0:58:20 | |
And surely, we need them, too, | 0:58:20 | 0:58:23 | |
to continue to add beauty to our lives. | 0:58:23 | 0:58:27 | |
Subtitles by Red Bee Media Ltd | 0:58:52 | 0:58:56 |