Episode 3 Winterwatch


Episode 3

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Tonight will be pheno-moon-al...

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It's not just once in a blue moon

you see one of these -

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it's once in a super blue moon!

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It's fascinating and it is new to

science.

Loose so tonight, in the

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cold moonlight, welcome to

Winterwatch.

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Hello, and welcome to Winterwatch

2018, coming to you live from the

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Sherborne Park Estate managed by the

National Trust up here in

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Gloucestershire. Our home for

Springwatch, all some watch and now

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Winterwatch. Our mission is to bring

you the very best of this season's

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wildlife. Late one we will be going

up to the island of Islay in

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Scotland, to meet Gillian. What

about that little mouse that froze

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last night after it was scared by

the owl, for five minutes 20

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seconds? Stock still. We have also

shown you Kate Bush and Mark arm and

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live on the programme this week, and

we have had a tweet from Mark to say

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how pleased he is to have a badger

named after him on Winterwatch. As

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yet, we've heard nothing from Kate

Bush.

It is very chilly tonight, but

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it is

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a special a super blue moon. It is

super because it is closest to the

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Earth, which makes it appear 14%

bigger and 30% brighter. A blue moon

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is when you get two full moons in a

month. If you haven't seen it, it's

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worth going to have a look. We saw

it just before the show. It was a

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lot brighter, absolutely beautiful.

It was orange to begin with as well.

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Not quite the colour of your code!

Elsewhere in the world it is a super

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blue blood moon, which is everything

we've got. A lunar eclipse only

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happens once every 150 years, so it

is a very special night. When you

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have that sort of moon, people can

go really crazy. Anything

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go really crazy. Anything could

happen tonight!

Not any thing when

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we arrived last week, we got a tip

off from a gentleman in the village

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of Sherborne. He said there was a

very curious thing going on in his

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back garden, and would be like to go

and see it. Our researchers when

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they're off their own bat and took a

camera with them, and put it where

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Brian was suggesting, and film

something extraordinary. See this

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picture. Quite hard to see. That

white animal. What could it be? It

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turns out it is not a rat or a

ferret. It is a ermine, which is a

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stoat in its winter coat. Stoves are

a form any

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colour normally, but some go white

in winter. It shouldn't be down

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here, because it is meant to

camouflage it against the snow, and

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it hasn't done a really good job.

What is going on, Chris?

There are a

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couple of elements why stoats go

white in winter. There was a

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daylight element and the temperature

element.

If you have seen a ermine,

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we would love to see it. It is a

magical animal.

We love it when you

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get in touch and get involved in the

Winterwatch conversation, and there

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are plenty of ways to do that. The

easiest way to do that is to go

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online and be our friend on social

media. You can like us on Facebook,

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follow us on Instagram and tagged as

in your photographs, or tweet us

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your questions, at #BBCSpringwatch.

Our website is full of in-depth

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articles, links to videos, and

in-depth information.

We have a

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number of cameras scattered around

the estate that allows us to look at

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the owls living there without

intruding on them. They will never

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know we are there. We have one

around, kilometre away. We have had

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a range of visitors. This is a

female muntjac deer, which were

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introduced from China. Jays have

been very active down there. There's

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lots of food out there, lots of

nuts, as we are baiting them. Some

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hung in the tree, which attracts

woodpeckers and also grey squirrels,

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which are numerous here. Nuthatches

and other things down there. We were

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watching it at night and in the

early morning. It looks dark in this

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shot, but it is getting light here.

Squirrels are a diurnal rodent and

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don't normally come out at night.

The muntjac is still there. The grey

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squirrel has the temerity to take on

a mammal much larger than itself,

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and it drives the muntjac away. How

about that?

Cheeky squirrel.

Muntjac

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are very nervous animal, which is

probably wise.

I don't think it is

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because it's a squirrel, but because

it's something moving quickly near

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it. They ask is T, muntjac.

Have you

seen a muntjac?

There are a lot near

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us. They eat a lot of vegetation on

the ground, so they impact

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negatively on butterfly and woodland

bird populations. In some places,

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they are a nuisance.

I like them!

The cameras we just showed you an

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live sometimes. In fact now. Let's

go live and see what is going on.

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What a magical scene. Nothing much

going on there, though. Here is this

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one. We have seen a lot of action

down here. Can you see

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one. We have seen a lot of action

down here. Can you see anything

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there at all? No. We also have our

thermal camera, which is roving

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around the countryside. Let's see if

there is anything on the thermal

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camera. Yes! Chris and I were having

an argument about this before we

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came on air.

It is a rabbit. Very

difficult to tell the difference

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between a rabbit and a hare.

You can

see how warm it is around the head.

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The

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The whole body is quite warm. I

would have thought it would be a --

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it would be as warm.

Very cold ears

though, on the tips. It is not going

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to pump blood into those

extremities. I'm sure it is their Mo

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regulating.

Its ears are bit like my

feet right now! As well as live

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cameras, we also have pre-recorded

wildlife films. For those it is

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important to have three elements.

Wildlife pictures, music and also

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words on top of that. Usually that

is done by three individuals who are

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working separately. So what would

you create if you had a shared

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experience? We wanted to put that to

the test, so we sent out wildlife

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camerawoman Sophie Darlington with a

couple of her close friends,

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musician Ali friend and writer Ben

Webb. They went to West Sedgemoor in

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Somerset, where they went to look

for wildlife and the bit of

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inspiration.

We have been friends

for years, and we all have different

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disciplines and jobs and lives. But

the one thing that absolutely binds

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us is a deep love of nature. Being

with Ben and Ali is an extraordinary

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thing. It is very, very different to

anything I've ever done before.

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Mainly because you don't normally

take a double bass out with you into

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the wild!

There is no way I'm going

to get through there.

West Sedgemoor

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is known for its winter flocks, and

it's very much within a working

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landscape. The Somerset Levels are

the perfect place for the birds to

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come in during harsh winters in

northern Europe. Thousands and

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thousands of which and teal. 50 to

60 cranes live here year-round.

The

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good news is there's plenty of

cranes. The bad news is, they are

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quite a long way away.

Cranes

extended trachea, which means they

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make a particular noise, which

carries, and it makes the most

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atmospheric noise.

When I

experienced nature, I'm very often

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looking at it from a sound point of

view. My ears experienced things

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almost before my eyes do, I think.

The cranes' call is quite harsh,

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quite cranky, and slightly

plaintiff, and very loud. They want

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to be heard above everyone else. Is

there a note they are singing, do

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you think? I think that is a C

Sharp. In nature, C is very common.

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If you hear a general harm of

wildlife, it tends to be around a C.

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A C seems right round here.

I am

filming away, and I can hear Ali

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playing the bass. It is almost like

the sound waves of the base, which

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fit beautifully into the landscape.

I am watching it down the lens.

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Brilliant, isn't it? There is a

perch. There is a pike.

There is a

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chub on the way!

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chub on the way! Look at that.

Amazingly beautiful, isn't it?

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My favourite moments everyday have

always been drawn. Even though they

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have been, at times, the most

frustrating.

Here comes the rain

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again. The weather, inevitably, will

affect the experience. It's been

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quite wet and quite cold. The mood

reminds me of a Dickensian novel,

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and a load estuary landscape. It is

always changing, always captivating.

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The reason is the Marsh Harrier is

up and about. Take-off!

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up and about. Take-off!

They slip on

either side of the trees as they

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tried to dodge the Harrier.

What I

think grabs me the most is the

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moments where you go from silence to

a cacophony of calls of ducks. They

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leapt up, and there's a sudden surge

in sound. It is awe-inspiring.

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That is a mixture of the cranes, and

the plumbers underneath them. Look

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at that!

That was wonderful.

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We live in an era of shared

experience. Shared memories are more

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enjoyable than ones that are tucked

away in your own consciousness

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somewhere.

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What a beautiful place. Later in the

show we are going to see the results

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of those shared memories in the film

that captures West Sedgemoor and its

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wildlife. This is our third night on

Islay. We have come to Loch

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Gruinart. Let's take a look on the

map to see where we are. Last night

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we were down here with our golden

eagles, and tonight we are up here

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at Loch Gruinart. To really

appreciate this place, you've got to

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see it in the daytime. This is an

area of low-lying marshes. There is

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where we are tonight. In the

background, you can see the edge of

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the sea loch. This is where waders

come in winter. What an family that

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uses this in particular are the

geese. And they come here in their

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thousands.

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This truly is one of Britain's

greatest wildlife spectacles.

And

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the common species of geese that

comes here is the barnacle geese.

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Over 50,000 birds arrived here from

Greenland each year, late in the

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autumn. And they are joined by

another species. The Greenland white

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fronted geese and over 5000 of them.

Why do these birds all come here?

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There is no land predators, but

mainly because there is plenty of

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good grazing, the farmland and the

marshes makes this place is a real

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haven for these birds. And this hide

just outside here is a known

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roosting site for the white fronted

geese. We have rigged some

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microphones so we can listen. Let's

see if there is anything going on

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outside. It is pretty quiet. It is

possible that because it is such a

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bright moon, and very clear night

outside, the geese might be making

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the most of this bright light to go

out feeding. But we did record a few

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calls earlier in the day.

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calls earlier in the day. Those are

contact calls and it makes the geese

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special. They use the contact calls

to hold their family groups

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together. It is quite rare in birds,

social behaviour. To appreciate it,

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let's take a look at this. At first

glance it looks like these are large

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flocks of geese, as we would expect.

But when we look closely, they

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congregate in small family units,

with birds of different ages. This

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year's young don't have white and

black bars on their chest. That is

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like the bird on the left. The bird

behind it has black bars, that is

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the adults. These family units,

these groups have more than two

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adults. There is the breeding pair

and also nonbreeding adults from

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previous years. They work together

to defend their territories. They

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show the Fidelity because they come

back to the same field year, after

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year. They will stay together in

their family groups for up to nine

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years. They show strength in

numbers. They really work together.

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With these birds, it really is all

about the clan. Now, this is a

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strategy called kin selection and it

is rare in birds. The nonbreeding

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adults forfeit their right to breed

and they help their close relatives

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to successfully breed. This is a

good strategy when resources are

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limited. There is no point in having

all the adults breeding, it would be

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too much competition. Instead, in

the case of the white fronted geese,

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they help their parents breed

successfully by helping to raise

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siblings, they can at least ensure

some of their genes get passed on to

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the next generation. There is a

problem with the population that

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come here. In the last 16 years, the

population has declined by 50%.

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Later on we will be meeting someone

who is doing some really amazing

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research to try and find out why and

he is doing it with this little bit

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of kit. By now, it is back to

Sherborne and Martin.

Astonishing.

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Live pictures from the island way up

in Scotland. Fascinating stuff. If

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you were in a band like this earlier

on in the autumn, you might have

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seen bats flit in a row. It was so

warm they didn't hibernate as early

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as they should have done. Hopefully

on a bitter cold night like this,

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they are hibernating. In

Autumnwatch, I went out to try to

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have a look at a

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have a look at a small, colony at

Sherborne. It is in an old mine and

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we are told the bats are inside. We

don't know how many are roosting. Oh

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yes! Like little hairy plums hanging

on the ceiling. It was brilliant to

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see those bats. But I was expecting

a few more. What we did, after

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Autumnwatch, the remote camera team

went back and under strict

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supervision, they were allowed to go

in for a short period and put

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cameras in and also special

microphones to see what might

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happen. Well, the morning after they

put those cameras in, they were

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sitting there about five o'clock in

the morning and something started to

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stare. There were a lot more bats,

Lesser horseshoe bats. This one

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coming in is a male. Why would that

come in to disturb the females?

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Autumn is the mating season and we

thing he's trying to find a partner.

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You can see him echo locating all

around. And sure enough, he starts

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to cosy up to this female he really

doesn't seem interested. She might

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be asleep or she just might not

fancy him. But he is incredibly

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persistent. He keeps nuzzling

around. If I was the female, I would

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be furious by now and give him a

slap. Eventually he gives up comedy

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goes away and he settles down. He

has a little bit of a stretch now.

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Then he settles down for a bit of a

snooze. But by now, all that flying

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around seems to have alerted the

other bats. They started to

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vocalise. We had special

microphones, but if we were there we

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wouldn't hear anything. But these

microphones bring the noise is the

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bats are making down to our level.

We cannot only hear them we can see

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the structure of the sound in a

sonogram. This is what was going on

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while he was flying around there.

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They are weird sounds. Maggie

Andrews is an expert. She reckons

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because they are talking to each

other and getting agitated and this

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was the vanguard of science.

Fascinating though it was, that one

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male coming in? The team continue to

watch the remote cameras and new

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things started to happen. This is

quite astonishing. This is horseshoe

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bats mating. The female is behind

and you can see the male closely

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attached and you can see him

thrusting and his legs going in.

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This mating went on for more than

two hours, in fact. It is quite a

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prolonged process.

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prolonged process. Other males are

getting very interested in what was

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going on and they started to fly

around as well. Eventually the

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mating process finished and they

separated. She had a bit of a brush

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down, sorted herself out and he went

away and went off for a little bit

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of a preen. If you look closely, you

can see the Venus, which is

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remarkably big on the batter.

There's a microphone started

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There's a microphone started what --

to record what was going on and

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during the mating we can hear the

sound the male was making. Now he is

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echo locating. The first call,

Maggie thinks it was probably him

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saying to the other bats, we are

busy. It was a busy mating call. Was

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it all over? No, the drama

continued. Another male comes in. We

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think this female is hibernating.

You can see his penis probing about,

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trying to make with her. She is

cold, fast asleep. He is very

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persistent again.

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persistent again. Extraordinary

footage. I never thought we would

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see anything like this. The penis is

remarkably big. Apparently it comes

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up to the top of his chest. She is

not having any of it at all. Then he

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disappears and leaves her alone. But

one more sonogram, we can hear the

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sound he was making trying to mate

with the female.

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with the female. That is a slightly

grumpy male, trying to mate. We

0:25:190:25:25

don't know what the sound is and

Maggie is going to write a

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scientific paper about some of the

sounds we have been able to record.

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It is a new area. We are glad to be

able to contribute in a small way to

0:25:330:25:39

the study of these bats. I have been

working on these programmes for

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nearly ten years, we have never seen

behaviour like that. It is

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brilliant. We left Sophie Darlington

and her friends down on Sedgemoor

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trying to record the pictures,

sounds and also the lyrics of the

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more. What did they come up with?

The Somerset levels... Water

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meadows.

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meadows. Sedge and rushes rustling.

Water shimmers and reflects.

0:26:200:26:34

Rivers, rinds and pools. The levels

managed for waders and wildfowl.

0:26:340:26:43

Annual migrants, sweeping down from

the north.

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Male teal, chestnut and livid green.

Brown and cream. Wind, ruffling

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feathers.

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feathers. Bills preening.

Shovellers, feeding.

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Black clouds in the wind. Darkness

falls...

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Pascual, silence stretches across

the water and the meadows and the

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low willows. In the sedge, a Brown

stripe wades.

0:28:020:28:11

stripe wades. The cold sunshine

breaks through the cloud.

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breaks through the cloud. Flocks of

Golden Globe was fly and sparkle in

0:28:190:28:21

the light. Bright, snow globe flakes

on the horizon and the white

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farmhouses.

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A 125 rattles across the levels.

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Gurgling comedy calls resonate and

carry. The cranes. Long wings and

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necks and trailing legs.

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necks and trailing legs. Then...

Quiet.

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Quiet. Resting, but ever aware. A

jolt of alarm.

0:29:110:29:27

jolt of alarm. A glimpse of danger.

The bridging and teal take flight.

0:29:270:29:37

Sweep and fold. Swelling,

mesmerising forms, the wing beat,

0:29:370:29:46

symphony.

0:29:460:29:55

And then the sun starts to slip

away.

0:30:070:30:19

Isn't it great when nature inspires

us to be creative? In so many ways,

0:30:210:30:26

making films, doing a piece of art,

music, dance... Do you know the

0:30:260:30:31

first time I was inspired by nature?

Where are we going here?

Five years

0:30:310:30:39

old, listening to Bambi, and I put a

two to one and did a little dance to

0:30:390:30:46

the April showers Song!

I love

books. Once a future king, put me in

0:30:460:30:52

the forest with balls all around.

There is a wonderful book about

0:30:520:30:56

three boys who run off into the

woods and live there for about a

0:30:560:31:00

year. I really wanted to do that!

You never dressed up and danced

0:31:000:31:06

around?

Surprisingly, no. The arts

and humanities research Centre set

0:31:060:31:12

up a project with three universities

to try to study modern natural

0:31:120:31:18

history writing, nature writing. As

part of that, they tried to find out

0:31:180:31:24

the nation's favourite natural

history books. We asked you to tell

0:31:240:31:33

us your favourite natural history

book. You came up with 278. I get

0:31:330:31:39

them the wrong way round! 278

different books, and that was

0:31:390:31:44

whittled down by a group of experts

to just ten, and then we asked the

0:31:440:31:50

nation to vote for their favourite

from that ten. We are about to

0:31:500:31:55

reveal the winners.

Let's start with

third place. It is a book by a guy

0:31:550:32:03

called Rob Callan, and it is called

Common Ground. It is a story of his

0:32:030:32:09

experiences of moving from London to

Yorkshire, and how he connects with

0:32:090:32:15

the outdoors, and he explores the

Common Ground we have with the

0:32:150:32:19

outdoors. Congratulations to him for

being in third place.

In second

0:32:190:32:24

place, one of my personal

favourites, Tarka the Otter, by

0:32:240:32:29

Henry Williamson. A very

non-sentimental book about Tarka and

0:32:290:32:35

his nemesis, deadlock the otter

hand. I actually met him.

It is a

0:32:350:32:43

great book.

Very unsentimental.

In

the first place is a deeply personal

0:32:430:32:50

memoir about a young boy who was

very shy, introverted, isolated, and

0:32:500:32:56

he had an incredible passion, an

obsession, and a great connection

0:32:560:33:01

with wildlife. I've read it, you've

read it, a lot of our viewers have

0:33:010:33:06

read it. It is the number-1 book.

Fingers In The Sparkle Jar, by our

0:33:060:33:13

very own Chris Packham. That got the

vote for the best nature wildlife

0:33:130:33:21

book fantastic. Well done, Chris. If

you want to be inspired by nature,

0:33:210:33:25

you have to get out in it. Gillian

is certainly doing that, getting out

0:33:250:33:32

and being inspired by the rich

wildlife of Islay.

We are at the

0:33:320:33:39

RSPB Loch Gruinart. This is the

roosting site for thousands of green

0:33:390:33:43

and white-fronted geese. The numbers

here are crashing. Fewer birds are

0:33:430:33:49

returning from their breeding

grounds. I am joined here by Ed

0:33:490:33:53

Burrell from the University of

Exeter and the wildfowl trust. The

0:33:530:33:57

problems you are seeing, why are you

seeing them here in Islay?

The birds

0:33:570:34:07

nest at incredibly low densities, so

we simply can't get the quantity and

0:34:070:34:11

quality of data we need.

How is your

research helping here?

Here is great

0:34:110:34:17

because they are around us

everywhere. We can get a real

0:34:170:34:23

insight into their lives. We can

catch them and mark them with

0:34:230:34:27

specially coded collars.

We can see

that in the shot tear.

Some of the

0:34:270:34:31

birds on the right have the coded

collars. The bird on the left has a

0:34:310:34:38

GPS tag. It allows us to work out

the behaviour of that bird.

I have

0:34:380:34:43

one of these here. This tag right

here allows you not just to see

0:34:430:34:48

where the birds are going, but also

what they are doing. You have

0:34:480:34:53

brought in this lovely graphic here

that shows the level of detail that

0:34:530:34:57

you can discern with these tags.

Just talk us through it.

These

0:34:570:35:03

measures very sad to leave the

movement in three-dimensional. On

0:35:030:35:07

the left, a grazing process, a real

peeking up and down. Then you get a

0:35:070:35:13

digging trace, which is more

grinding down into the soil for

0:35:130:35:17

roots, a key part of their diet. And

then there is the other, head up,

0:35:170:35:23

looking for predators, and the other

is asleep in the roost.

So what

0:35:230:35:30

picture are you building up of what

is going on in the breeding grounds

0:35:300:35:33

in Greenland?

Is guts is a great

idea of what is going on. We can see

0:35:330:35:38

when the females are trying to nest

and when they are incubating, and

0:35:380:35:43

how long that lasts. Most of the

birds are attempting to nest, but

0:35:430:35:47

lots of failing midway through

incubation. We don't necessarily

0:35:470:35:51

know why. It may be predators,

whether events or a lack of body

0:35:510:35:56

condition.

That is incredible. This

is a brilliant piece of research.

0:35:560:36:03

This piece of kit is providing a

window into the world of a bird that

0:36:030:36:09

breeds over 2000 miles away.

Hopefully this research is going to

0:36:090:36:13

reverse this worrying trend of their

decline in numbers. Back to

0:36:130:36:17

Sherborne now with Chris and

Michaela.

We went to Islay years ago

0:36:170:36:23

for Autumnwatch. Great to see those

are huge flocks of geese, but sad to

0:36:230:36:30

hear they are not the only birds

flocking at this time of the year.

0:36:300:36:34

Farmland birds are as well. This is

a group of birds in serious decline

0:36:340:36:38

generally in the UK, but here at

Sherborne they do active management

0:36:380:36:43

to attract these birds and give them

a safe habitat. At this time of

0:36:430:36:49

year, they are flocking in these

wonderful mixed groups. All sorts of

0:36:490:36:55

birds in that flock. Linnet,

yellowhammer... The fact they flock

0:36:550:37:00

together has given us the perfect

opportunity to do an experiment.

0:37:000:37:05

Many farmers take up countryside

stewardship schemes, which encourage

0:37:050:37:10

them to plant strips of land that

provide winter food for these birds.

0:37:100:37:17

Other farmers put seed like that out

into the field to keep these birds

0:37:170:37:22

going. We wanted to see which sees

appeal to which birds and how

0:37:220:37:26

important they were in their diet.

We set up an experiment with six

0:37:260:37:32

trays. We separated the seeds. We

left this out in the fields and we

0:37:320:37:40

waited for the birds to come and do

their work.

It's been quite a

0:37:400:37:45

successful experiment, because we've

had lots of visitors. A whole

0:37:450:37:50

variety of farmland birds, and a few

garden birds taking advantage as

0:37:500:37:55

well. They are on lots of different

seeds. Linnets, greenfinch as well,

0:37:550:38:03

you can see them chewing away at the

seed. A robin in the background.

0:38:030:38:09

Very mixed. Bluetits Mac pro, and a

huge variety. We have been watching

0:38:090:38:20

them to see who is eating what.

We

saw the beaks working there, and we

0:38:200:38:26

can make an analogy between those

beaks and household tools like

0:38:260:38:30

these. Long nosed pliers, Bull nose

pliers and secateurs. Let's look at

0:38:300:38:37

the birds individually. Let's start

off with the linnet. Which seeds did

0:38:370:38:43

the linnet go for? You can see those

tiny little bills. Short, stubby but

0:38:430:38:50

sharp bills, manipulating the seeds

to remove the husk and get to the

0:38:500:38:55

interior. The shot shows that the

linnet is quite keen on the rape

0:38:550:39:02

seed. Most of the time, they were on

that. We think that might be an

0:39:020:39:11

artefact of the experiment because

some of the birds were messy at the

0:39:110:39:14

table and scattered the seeds

around. The linnets may have been

0:39:140:39:20

taking them from other trays. They

are feeding on this very small seed

0:39:200:39:27

here, the rape seed. You can see

that the linnet has that very fine

0:39:270:39:33

beak. They use that to hold the

seeds, crush it and remove the husk

0:39:330:39:38

and try to get to the interior part.

They are much more dextrous than a

0:39:380:39:45

pair of pliers.

Let's look at

another bird that uses a different

0:39:450:39:51

technique, the reed bunting. That

has a slightly bigger beak, and it

0:39:510:39:55

has a very different techniques. It

picks those seeds up and get them

0:39:550:40:03

into the side of its beak, the toe

meal rich. And it slices through.

0:40:030:40:14

meal rich. And it slices through. So

23% canary seed, 23% wheat. I guess

0:40:140:40:17

they're beak is more like these, the

secateurs. If I take one of the

0:40:170:40:23

seeds that reed bunting was eating

and put it into the secateurs, just

0:40:230:40:27

like the reed bunting's beak, it

slices through the husk and releases

0:40:270:40:33

the seed. It means that it can go

for a larger variety of seeds,

0:40:330:40:39

because it has that bigger beak.

Indeed. What about the last species

0:40:390:40:44

we are looking at, the greenfinch?

You may think of them as a garden

0:40:440:40:50

bird, but before gardens they were

feeding on woodland edges, where

0:40:500:40:54

these plants were growing. The

greenfinches have a stouter bill.

0:40:540:40:59

Still sharp and pointed. You can see

them using their tongue to

0:40:590:41:03

manipulate the seed into the right

place, where they can place it on to

0:41:030:41:12

the tomia Ridge. They were not

interested in canary or wheat at

0:41:120:41:18

all. This is the equivalent of the

green Finch beak, a pair of bullnose

0:41:180:41:25

pliers. Same principle, but it

allows them to feed on larger seeds.

0:41:250:41:33

We asked if this was the optimal

seed mix? Should it be a mix?

0:41:330:41:40

Sunflowers are good, rape seeds are

good, but I reckon we could probably

0:41:400:41:45

get rid of the oats. Not much was

taken. They are basically a cheap

0:41:450:41:50

filler.

It's not just about handling

time with the seeds and the ability

0:41:500:41:55

to open them, it's about the

calorific award for them. Of all the

0:41:550:42:00

seeds here, the richest are the rape

seed and sunflower seed, and that is

0:42:000:42:04

what the birds were going for. They

were leaving those that represented

0:42:040:42:09

less calorific return for effort

behind. 29% of European birds are

0:42:090:42:16

eating seeds. Another neat fact,

scientists from universities, in

0:42:160:42:24

conjunction with the Netherlands

Institute of ecology, have been

0:42:240:42:28

contrast in great tits in Holland

and the UK. They found that since

0:42:280:42:33

1970, the bills of the UK's great

tits have increased in length by 0.3

0:42:330:42:40

of a millimetre. They think it is

because they are feeding more on

0:42:400:42:45

bird feeders. We spent £337 million

a year in the UK feeding our birds,

0:42:450:42:54

whilst our European neighbours spend

£167 million a year on the whole

0:42:540:43:05

continent feeding birds. We are way

ahead, and some evidence suggests we

0:43:110:43:14

are driving evolution by doing so.

Evidence in Arizona shows the same

0:43:140:43:16

thing. Birds to eat in cities are

changing their bill shape. And it is

0:43:160:43:20

affecting their ability to sing.

They are having to sing to a

0:43:200:43:25

different tune to their country

cousins!

That is amazing. Let's head

0:43:250:43:32

back to Scotland, to the East Coast,

where Lucy Cooke went a couple of

0:43:320:43:36

weeks ago to take a look at one of

our largest mammals, and the fact

0:43:360:43:41

that sometimes there's a lot more

going on than meets the eye.

0:43:410:43:47

The UK is a relatively small group

of islands, but it punches well

0:43:470:43:52

above its weight for wildlife. Our

coasts are home to almost 40% of the

0:43:520:44:02

world's population of grey seals,

and this population has been studied

0:44:040:44:08

for 30 years. Every winter, they

come ashore to give birth. It may

0:44:080:44:12

look tranquil, but this researcher

from Durham University has been

0:44:120:44:20

looking into life at this crucial

time of year.

There's so many of

0:44:200:44:25

them! I can't believe it. In a lot

of ways, they are a mammal that

0:44:250:44:31

wants to be a fish, but unlike fish,

they have to come onto land to

0:44:310:44:36

breed.

Here in lies the problem.

The

natural world is difficult. It is

0:44:360:44:46

how these animals cope with stress.

Finding food, reproducing. Here they

0:44:460:44:52

have to raise a nice pup that is

going to be healthy, and protect it.

0:44:520:44:58

How can you tell if they are

stressed?

If they are fighting,

0:44:580:45:02

there is a stress there, but they

quickly go back to a resting state.

0:45:020:45:07

But that doesn't mean that they have

recovered from stress. We have been

0:45:070:45:12

monitoring their heart rates.

Sean

can record the animals' behaviour

0:45:120:45:18

and their heart rate together. If

there is a disturbance in the

0:45:180:45:22

colony, he can compare the behaviour

he is seen with the data recorded by

0:45:220:45:27

the heart monitor. You have a lot of

kit.

This is what we need to monitor

0:45:270:45:32

the seals. We have a camera here

that is recording the behaviour of

0:45:320:45:37

this female here. She is wearing one

of our heart rate monitors.

That is

0:45:370:45:46

her heart rate now? She looks pretty

chilled out, just lying there. Is

0:45:460:45:49

that a chilled out heart rate?

It is

pretty flat across the screen, with

0:45:490:45:55

no big changes. When you get a

stressful event like a fight, or a

0:45:550:46:01

pup wanders off, you will see a big

change in heart rate. The problem in

0:46:010:46:06

a natural situation like this is

it's very difficult to expose a seal

0:46:060:46:11

to a standardised stress. The fights

are not the same. So we have to come

0:46:110:46:15

up with a way to expose them to a

standardised form of

0:46:150:46:28

standardised form of stress.

What is

that?

There is a trick there.

Enter

0:46:280:46:33

Rocky, a remote-controlled car which

monitors how the seal mothers

0:46:330:46:38

respond to stress. Presumably this

will not harm them in any way?

It is

0:46:380:46:43

a very mild form of stress, but it

gives them time to get used to

0:46:430:46:48

Rocky. Taking it steady.

She is

looking around now. Looking at

0:46:480:46:53

Rocky. Her heart rate has gone up.

0:46:530:47:03

Usually their heart rate goes up

with the arrival of Rocky.

Once

0:47:030:47:13

she's settled, Sean plays a wolf

call. Not something she would

0:47:130:47:18

encounter in the wild.

That lever,

flick it forward. Ready, steady, go.

0:47:180:47:33

She is showing a degree of stress.

People often use behaviour as a

0:47:370:47:45

measure of how stressed wild animals

are, particularly the presence of

0:47:450:47:50

people and it might be they look

pretty chilled, but in terms of

0:47:500:47:54

their physiology, they are quite

stressed.

A stressed out mother

0:47:540:48:00

burns precious energy that could be

better used producing milk for her

0:48:000:48:11

pup. If you are out watching at seal

colony, and you think it is fine,

0:48:110:48:17

just because they look OK, it

doesn't mean they are?

Just be

0:48:170:48:22

careful, don't go jumping around in

view of the wildlife, just take it

0:48:220:48:26

easy essentially.

0:48:260:48:34

easy essentially.

It is fascinating

to discover that even though they

0:48:340:48:37

looked calm, they may be feeling

very stressed by your presence. And

0:48:370:48:41

that is food for thought, for those

of us who love watching wildlife.

0:48:410:48:50

of us who love watching wildlife.

It

certainly is, we are constantly

0:48:500:48:52

encouraging people to go out, as we

do and try to get as close to

0:48:520:48:59

wildlife and enjoyed it. But those

stress calls are very subtle. It

0:48:590:49:04

would be interesting to know more

about that, particularly in

0:49:040:49:09

photography and film-making. We

think we are far away not to

0:49:090:49:14

interrupt these animals, but maybe

we are not far enough.

We don't

0:49:140:49:18

speak the same language do we.

You

know when your dog is stress, but it

0:49:180:49:23

is difficult to know when a seal is

stressed, but we are learning.

If

0:49:230:49:28

you are stressed, there is a great

way to distress, go out and do some

0:49:280:49:38

bird-watching, especially the

lapwing. They are beautiful animals.

0:49:380:49:43

They have very error doesn't

feathers, hard to see with this.

0:49:430:49:46

They have clubbed wings. They have

the lovely crest on the top of their

0:49:460:49:51

head. It is my dad's favourite bird.

The numbers have dropped by 60% in

0:49:510:50:00

the last 40 years.

But it is a

beautiful bird. Stunning.

Our

0:50:000:50:07

cameraman went out last night and

managed to film the lapwing at

0:50:070:50:10

night. What was going on was that

under the bright moonlight, these

0:50:100:50:20

lapwing were taking advantage to

feed. Quite a substantial flock.

0:50:200:50:26

There is the rabbit in the

background. But they are feeding on

0:50:260:50:29

worms and invertebrates on the

ground. It wasn't completely dark

0:50:290:50:34

because the moon was out, but I am

surprised that when they fly off,

0:50:340:50:38

these birds but are used to flying

in the day, they go bashing into

0:50:380:50:44

each other. They look slightly

wobbly. Not quite in control of

0:50:440:50:49

their flight. But remarkable to see

them taking advantage of the

0:50:490:50:54

moonlight. Avian predators are not

around, so as sensible strategy.

Not

0:50:540:50:59

the

0:50:590:51:03

the only species foraging. Our

cameraman found a heron hunting.

0:51:040:51:09

Typical hunting strategy. Still,

stand and wait and then stabbed. It

0:51:090:51:16

scores as well. The must have been a

little light for this bird to be

0:51:160:51:20

hunting. Sometimes they will use

artificial light, street lights. If

0:51:200:51:24

they are near somewhere where there

is plenty of fish, they will turn

0:51:240:51:28

up. The other thing is, we have seen

other birds taking advantage of

0:51:280:51:34

human writing. Read Shanks, I

remember reading a few years ago do

0:51:340:51:39

well, wading birds.

0:51:390:51:45

well, wading birds. It illuminates

the muds, which would otherwise be

0:51:450:51:47

darker.

0:51:470:51:52

darker. And the birds who were

foraging under this light had a

0:51:530:52:01

heavier body mass.

My dad used to go

out to try and harpoon Mullet. He

0:52:010:52:09

never got one. He wasn't like the

heron. He never got one. Just as

0:52:090:52:15

well.

Heron have adapted, unlike

your dad. What about this time a

0:52:150:52:22

beer? It has got cold this morning.

The most inhospitable environment,

0:52:220:52:30

top of the Cairngorms perhaps? Ice

and snow, terrible wind. You could

0:52:300:52:36

dress up warm, but you wouldn't want

to jump into a loch on the West

0:52:360:52:44

Coast of Scotland, you think it

would be dead cold. But in fact,

0:52:440:52:49

they are dead of life.

Midwinter in the Scottish Highlands.

0:52:490:52:56

Snowcapped mountains stand sentinel

over the still surface of

0:52:560:53:00

Lochcarron. But underwater, the cold

current still team with activity.

0:53:000:53:12

And for one, strange life form,

these cold months herald the start

0:53:140:53:19

of their year. These peculiar

protrusions are colonial soft corals

0:53:190:53:25

and they have lain dormant since

high summer, when encrusting orange

0:53:250:53:32

algae overpowered them, causing them

to shut down. Now, with the algae

0:53:320:53:37

killed by the cold, pale feeding

fingers or polyps start to emerge

0:53:370:53:45

from the fleshy colonies. Waving

gently in the current, they beat to

0:53:450:53:50

the rid of the tide. They are

collecting the early-season plankton

0:53:500:53:55

and it is the ghostly colour and

feathery appearance that gives this

0:53:550:54:01

coral its common name, dead man's

fingers. But names can be

0:54:010:54:07

misleading. For these colonial

beings, actually bring life to this

0:54:070:54:13

reef, creating a unique habitat for

a multifaceted sci-fi cast.

0:54:130:54:25

A tiny and the pod scavengers

amongst the feathery polyps of the

0:54:270:54:35

coral. Microscopic scraps litter the

surface, but this little crustacean

0:54:350:54:40

is brazen and will even try to steal

food from the polyps themselves.

0:54:400:54:44

They seem to know what it wants and

shrink away as it comes close.

0:54:440:54:56

shrink away as it comes close. It

causes little harm to the colony,

0:54:560:54:59

but lurking nearby is a genuine

threat.

0:54:590:55:05

This sea slug only lives for a year

but is entirely dependent on dead

0:55:120:55:17

man's fingers throughout its short

life.

0:55:170:55:24

life. Its eyes are extremely

primitive, relying instead on a pair

0:55:240:55:28

of sensory tentacles to build a

chemical picture of their world to

0:55:280:55:33

find their food. Sensing danger, the

dead man's finger retracts its

0:55:330:55:42

polyps, but it's still vulnerable.

Unlike hard corals have a

0:55:420:55:50

protective, calcified casing, soft

is

0:55:500:55:56

is rubbery and the slug's jaws are

more than capable of biting through

0:55:580:56:03

it. With a captive food source, they

grow quickly, reaching a whopping

0:56:030:56:11

eight inches in length, making them

the UK's largest sea slug. Despite

0:56:110:56:17

the onslaught, the dead man's

fingers thrive in these cold waters

0:56:170:56:21

and at this time of the year, they

have put themselves in prime

0:56:210:56:26

position to take advantage of the

plankton rich spring tides. He would

0:56:260:56:31

have thought it? A winter reef

teeming with life at the bottom of

0:56:310:56:36

the Scottish loch, all built on a

colonial creature with death in its

0:56:360:56:39

name.

I cannot believe there is that much

0:56:390:56:45

colour and explosion of life in the

freezing cold loch.

To the cameraman

0:56:450:56:50

for getting in that freezing cold

loch. At the beginning we told you a

0:56:500:56:56

tantalising

0:56:560:57:01

tantalising view of ermin. This is

what has been sent in. This is from

0:57:030:57:11

Killian and this is in her back

garden.

0:57:110:57:17

garden. This is an ermin rolling an

egg. It rolled along the patio. Have

0:57:190:57:23

you ever seen an ermin.

In 18.7

lumens, I have never seen one.

Take

0:57:230:57:33

a look at these.

0:57:330:57:41

a look at these. Simon West, we

don't know where it is from. This is

0:57:410:57:46

from Pat Wallace on Facebook.

This

is a quote from a Renaissance writer

0:57:460:57:52

who reminds us to keep our minds and

consciences as pure as the ermin

0:57:520:57:58

keeps its first.

Do you do that?

My

fair is always spotless.

We are

0:57:580:58:09

doing a Facebook live, so go to the

Springwatch Facebook page and we

0:58:090:58:13

will answer some of your questions.

Tomorrow is our final show. Killian

0:58:130:58:18

will still be in Ireland where she

will be investigating the hen

0:58:180:58:26

harrier population.

We will be

looking at the badgers scene where

0:58:260:58:29

they have been and using resources.

I shall have a nocturnal adventure

0:58:290:58:34

as I search for an enchanting bird,

catching it in the middle of the

0:58:340:58:38

night. Tomorrow night, we are on at

9pm, an hour later. Immediately

0:58:380:58:47

after this, McHale will take over on

Facebook and we will be answering

0:58:470:58:51

questions you have sent him. --

Micaela.

Goodbye. Goodbye.

Goodbye.

0:58:510:59:05

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