Mae Iolo yn darganfod miloedd o adar yn hedfan i'r dref i dreulio'r nos. Iolo finds thousands of birds flying to town to spend the night from wagtails and jackdaws to thrushes a...
Browse content similar to Rhaglen 4. Check below for episodes and series from the same categories and more!
-If you want to see a show, you
-won't see a better wildlife show...
-..anywhere in the world
-than starlings coming in to roost.
-It's like a huge hornet's nest
-under Aberystwyth pier.
-will have flown tens of miles...
-..to feed on farms
-in northern Ceredigion...
-..or even as far as Meirionnydd
-They gather in small groups...
-..and return to roost in a safe
-and dry place, under the pier here.
-As they come back,
-they form larger and larger groups.
-By the time they've reached here,
-there are 5,000 of them...
-They fly back and forth,
-back and forth.
-Thousands are coming in.
-Look at all these.
-It's one of nature's wonders
-how these came together...
-..and chose Aberystwyth pier
-as a meeting spot...
-..after spending the day
-spread out throughout Mid Wales.
-But during autumn and winter
-..this is what starlings do.
-If there's a good place to roost...
-..they remember it
-and obviously share the information.
-The best places are often in towns.
-Will they stay here a while?
-Will they stay here a while?
-They'll stay under there overnight.
-the experience of a lifetime.
-Do they gradually fly away?
-Yes, in the morning,
-as they came in.
-They come in groups of dozens,
-They go back and forth before
-deciding it's time to go to sleep.
-They fall out of the air
-under the pier.
-It's incredible how they know
-how to come in. From all directions.
-It's a safe and dry place
-under the pier.
-Listen to that sound.
-The sound of thousands of birds.
-They're under the pier in rows.
-Those at the end of the rows
-will fly up and go under the pier.
-They're packed tightly together.
-They're packed tightly together.
-How often does this happen in Aber?
-For how long?
-It starts at the end of October...
-..and will go on until late
-February or the beginning of March.
-Every night, free of charge.
-The metal parts of the pier...
-..are far sturdier and sheltered
-than any tree, hedge or rush...
-..their natural roosts.
-For a starling,
-this is a perfect spot.
-A disused building with plenty of
-dry standing spaces does the job.
-I estimate that around 9,000
-have come in tonight.
-They're all right under the pier.
-I can still see them, thousands
-of them, and you can hear them.
-They're very noisy.
-They seem to be deciding exactly
-where each one is going to be.
-The more experienced ones,
-the oldest ones, are in the middle.
-The younger ones are on the fringes.
-If it's extremely cold,
-they will get very cold...
-..whereas the ones in the middle
-will be warm and safe.
-What I like about this roost
-..is you're right there
-with the birds.
-They fly above your heads
-and come round...
-..and you can go right up to
-the pier and listen to their noise.
-It's not only starlings
-that roost in towns overnight.
-Many different birds do it.
-We associate cormorants
-with the coast.
-But these fly to a park in Cardiff
-to spend the night.
-It's late afternoon.
-The sun is about to set.
-In five minutes,
-it will have disappeared.
-The cormorants are gathering
-to roost on the tall trees here.
-One's flying off.
-Why do they come to Roath Park?
-There are tall trees here...
-..they're on an island in the middle
-of the lake so they're safe...
-..but the main reason is because
-they're so close to the sea.
-In five minutes, they can be
-feeding, filling their bellies.
-Another five minutes,
-they can be back here roosting.
-For the next half an hour to an
-hour, I expect to see more arriving.
-Here's one coming in now.
-The official Welsh translation
-of cormorant is "mulfran".
-Like a lot of our birds, there are
-many dialectal Welsh words for it.
-"Morfran" (sea crow)
-is one of them...
-..an apt term as it's black
-and is seen on the seaside.
-is "colier" (collier)...
-to its dark colour.
-as it swallows a lot, I suppose.
-How about these -
-"wil wal waliog"...
-that hint it's quite a character...
-..like "bilidowcar" - my favourite.
-They like being together.
-They nest together,
-sometimes, they hunt together.
-They also obviously
-like to sleep together.
-Around 50 cormorants...
-..roost near Roath Park Lake
-in Cardiff every night in winter.
-In the city centre,
-there's a far larger bird roost...
-..which hardly anyone notices.
-Look at that tree.
-It's alive with small birds.
-They're all wagtails.
-They make quite a noise.
-There are hundreds of wagtails here.
-They're roosting here.
-They're along the roof.
-Once one of them
-decides it's safe for them to go...
-..it goes down and is followed
-by dozens of others like waves.
-They're still coming in.
-They'll roost here overnight.
-They're moving back and forth.
-It'll be a while yet
-before they settle...
-..before they decide
-where they roost.
-They're constantly chattering
-and moving all the time.
-They're so busy.
-They're still coming. I've never
-seen so many wagtails together.
-I estimate that at least 200 have
-come in and they're still arriving.
-In contrast to cormorants...
-..the pied wagtail
-tends to spend the day alone.
-In winter, at night,
-they come together to roost.
-They'd naturally spend the night
-..and keep warm in rushes
-above the water.
-The temperature in towns can be many
-degrees warmer than the countryside.
-That can be the difference
-between life and death in winter.
-It's one reason why they come here
-in their hundreds.
-There are fewer marshes
-available to them these days...
-..and, like many other birds...
-there are better spots in towns.
-As well as that,
-they're away from any dangers.
-I estimated the number of birds
-as they flew in.
-I thought there may be 200.
-But looking up at that tree,
-they're like leaves.
-I'd say there are at least
-double that number here.
-All the white bits you can see
-One theory is they come together
-to share information about food.
-If a bird looks healthy, it means
-it's found a good place to feed...
-..so it'll be a good idea
-to follow it in the morning.
-There are wild places in all towns.
-This one is in Haverfordwest.
-the wild plants are at their best...
-..and change a barren spot
-into a colourful and rich habitat.
-I'm coming down towards
-the football pitch.
-In front of me
-is the old animal mart.
-It was closed years ago.
-Places like this that have been left
-alone are great...
-always reclaims them.
-Even in places such as this
-there are all sorts of flowers.
-Red clover is good.
-It's full of nectar.
-I've seen six species of butterfly
-just in this bit.
-I've seen two types of skipper - the
-small skipper and the large skipper.
-They're orange butterflies.
-They're quite swift.
-There's plenty of nectar and pollen
-for them on the flowers.
-Areas of land such as this one
-in towns are important for wildlife.
-With rural habitats declining...
-..this is one of the few places
-in which nature can thrive.
-In winter, finding food is hard.
-It must be searched for
-..including in any wild habitats
-is one of Wales's rarest birds.
-This one has landed in a pool
-It would usually hide in a marsh
-in the countryside.
-But despite the rubbish...
-..it's decided that
-this is a good place to find fish.
-It'll be here for a day or two,
-or longer if there's enough fish.
-On an industrial estate near Rhyl...
-..a short-eared owl
-has found a wild patch of land.
-Winter is the best time
-to see unusual birds around towns.
-Birds who usually hide
-are forced to be less shy.
-In the summer, short-eared owls
-live on the uplands.
-In winter, it's forced
-to look for mice lower down.
-This is a good place to hunt.
-The thick vegetation has created
-the perfect habitat for small mice.
-I don't know of any supermarket
-in the country...
-..that isn't a good place for birds.
-When new ones are built,
-trees are planted.
-These are rowan trees.
-Once they mature, they're full
-of berries, like this one here.
-That attracts birds.
-Here, blackbirds and thrushes
-have been landing on the tall trees.
-They come down and feed here.
-It'll get dark within half an hour.
-They have to feed now
-before they go to roost over there.
-Without the supermarket,
-these trees wouldn't be here.
-This all takes place on the side of
-one of North Wales's busiest roads.
-If you're very lucky, when you go
-to your local supermarket...
-..you might see these lovely birds,
-They come from Scandinavia.
-They're rare winter visitors.
-They come here
-once every six or seven years.
-When the berries fail
-..they visit us.
-When they do come, the best place to
-see them is your local supermarket.
-They're beautiful. They really are.
-It has orange-pink, punk-style hair.
-There are patches of red
-on their wings.
-That's why it's called a waxwing.
-They're so pretty.
-When you go to
-your local supermarket in winter...
-..you might see these.
-When it's frozen solid
-in the rest of Europe...
-..thousands of birds head west
-to milder weather.
-They'll go as far as Ireland
-if they must.
-After eating the berries...
-..they'll fly back to the Continent
-for the spring.
-Winter can be a good time
-to see birds in towns.
-As it's such a barren season...
-..thousands come to eat
-or to look for shelter.
-For a short period
-just before sunset...
-..which only lasts
-for about 15 minutes...
-..you'll get a great aerial show
-such as this one in every village.
-Wow! Look at these!
-Hundreds of jackdaws.
-I'm between Llanelli and Loughor.
-Every night in winter,
-hundreds of birds come in to roost.
-They choose tall trees,
-either behind me...
-..this one or ones in front of me.
-on the direction of the wind.
-This is a great place for them.
-Lots of heat comes from houses.
-There are lots of factories
-As well as that, it isn't far for
-them to get food in the morning...
-..from people's gardens, parks
-This is right in the middle.
-Almost three million jackdaws
-live in Britain.
-So it's no surprise...
-..that so many gather around our
-towns during winter when it's cold.
-The most experienced birds
-lead the way.
-They're the ones
-who find the roosts.
-But they never go
-straight to the roost.
-They circle around the area and
-land in many places before settling.
-There's wave after wave above me.
-No-one knows why they don't find
-one spot and settle there.
-It never happens.
-They look like they're going
-to settle, they go up...
-..look like they're settling again
-and go back up, just like these.
-Some are settling just above my head
-in this tree.
-they obviously natter to each other.
-A jackdaw language where they chat
-about good places to shelter...
-..and to find food in the morning.
-Away they go...
-..like children who want to continue
-playing and put off going to bed.
-They continue chatting.
-And they continue to decide
-who lands where.
-You can be sure that the experienced
-ones will get the best spots.
-I think this will be the final wave.
-It's getting very dark.
-What's interesting is...
-..they're settling for the night
-not only in the trees...
-..but on the factory too.
-They've found a safe and warm place
-That's where they'll stay all night.
-If I was a jackdaw
-or another urban creature...
-..I'm sure there's enough in towns
-for me to recommend.
-There are great places to stay warm
-They're cosy compared to open,
-desolate places in rural Wales.
-Between the concrete
-and among the rubbish...
-..there's enough food available.
-There's no problem commuting.
-If they have to leave the town, they
-only have to fly above the traffic.
-And, of course,
-every little wild patch helps.
-S4C Subtitles by Testun Cyf.
Mae Iolo yn darganfod miloedd o adar yn hedfan i'r dref i dreulio'r nos. Iolo finds thousands of birds flying to town to spend the night from wagtails and jackdaws to thrushes and waxwings.