Yorkshire & Lincolnshire

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:00:12. > :00:18.how close you are to the natural world. Even in this, the most urban

:00:18. > :00:23.environment. There are so many natural wonders in our towns and

:00:23. > :00:33.cities. It is a shame more of us can't take time out of our busy

:00:33. > :00:38.

:00:38. > :00:48.lives to stop and discover what is city, you might be surprised to find

:00:48. > :01:03.

:01:03. > :01:09.just how easy it is to get back to Keeley Donovan ventures into a

:01:09. > :01:12.graveyard after dark to catch some winged beauties. I'm starting my

:01:12. > :01:17.exploration from here, Sheffield, the city of steel. I'm less than

:01:17. > :01:23.half a mile from the city centre. So you can't get more urban than this.

:01:23. > :01:28.This is the River Don which runs through the city centre and these

:01:28. > :01:33.are our bait to catch a glimpse of a colourful winged hunter. It is

:01:34. > :01:37.bright blue, orange and at the top of most people's must-see bird list.

:01:37. > :01:41.We are on the hunt for the kingfisher, slap bang in the middle

:01:41. > :01:46.of Sheffield. This bird can be elusive. I have been staking out

:01:46. > :01:49.this stretch of water for two mornings and so far, all we have

:01:49. > :01:59.caught is two fleeting glimpses. Here it is flitting over the water.

:01:59. > :02:00.

:02:00. > :02:05.We just need it to stop so we can get a good look. At last, got it!

:02:05. > :02:14.After seven hours, we have got a kingfisher perched on a snag in

:02:14. > :02:22.front of us. Fantastic! All we have had is the kingfishers whizzing

:02:22. > :02:26.up-and-down. He's just flitted around. I can tell the kingfisher is

:02:26. > :02:30.definitely a male. I know that because if you look at his bill,

:02:30. > :02:36.there is the upper mandible, the top part, and the lower mandible, the

:02:36. > :02:39.lower part. The lower mandible is all black. Females have a red base.

:02:39. > :02:44.As brilliant a hunter as the kingfisher might be, it is not at

:02:44. > :02:48.the top of the urban food chain because it is another potential meal

:02:48. > :02:52.for the undisputed king of the city skies. In order to catch up with

:02:52. > :03:02.this fabulous urban predator, I'm going to need the best view the city

:03:02. > :03:02.

:03:02. > :03:08.can provide. Here, 250 feet up, I'm looking down from a peregrine

:03:08. > :03:14.falcon's eye view of Sheffield. Half a mile away is my first view of this

:03:14. > :03:19.magnificent creature. A mating pair has been here for two years. Three

:03:19. > :03:26.chicks hatched this year and have just left the nest. These pictures

:03:26. > :03:32.were recorded on a camera which streamed images on the internet. My

:03:32. > :03:35.guide is Jim Lonsdale, who works at Sheffield University. He installed a

:03:36. > :03:41.platform to attract the birds. It is not long before we see them in

:03:41. > :03:49.action. One of the adults has just made a kill with the hungry young in

:03:49. > :03:59.hot pursuit. It has some food. Three peregrines are chasing it. Oh, food

:03:59. > :04:04.pass, fantastic! Wildlife spotting doesn't get much better than this.

:04:04. > :04:10.The fastest bird on Earth flying around the city skyline, juveniles

:04:10. > :04:19.chasing the adult with food. Magic! To the winner, the spoils. Even from

:04:19. > :04:23.a mile away you can see this falcon tucking into its prey. Their vision

:04:23. > :04:30.is eight times sharper than the human eye. No birds in Sheffield can

:04:30. > :04:40.be safe. Somebody once said to me if it flies, a peregrine will eat it.

:04:40. > :04:43.

:04:43. > :04:47.LAUGHTER Mostly pigeons, but a little greeb, jay. That is an

:04:47. > :04:54.amazing variety of birds. They are hunting all of these birds within

:04:54. > :04:57.the limits of Sheffield. I never thought for one minute that I would

:04:57. > :05:02.be stood here watching peregrine falcons. The thing I like most of

:05:02. > :05:06.all is watching them fly. They are unbelievable flyers. Yeah.We got

:05:06. > :05:11.two chicks last year. They fledged successfully. This year, four again,

:05:11. > :05:17.but only three hatched. When did they fledge? Ten days ago.At the

:05:17. > :05:20.moment, they are following their parents, flying around? Yeah,

:05:20. > :05:25.getting more adventurous and going further afield day-by-day. It is not

:05:25. > :05:29.a case of peregrines having to adapt to this urban environment as it

:05:29. > :05:33.could have been designed for them. No threats from anxious gamekeepers

:05:33. > :05:43.and buildings that mimic the cliffs that their rural cousins inhabit. Of

:05:43. > :05:43.

:05:44. > :05:49.course, an endless supply of food. I have come back to the River Don to

:05:49. > :05:54.see some more birds that have adapted to a city landscape.

:05:54. > :05:58.Sandmartins usually nest in sandbanks, but they are at home in

:05:58. > :06:01.these old factory drainage pipes, too. Pollution from the heavy

:06:01. > :06:07.industry used to render the River Don uninhabitable for wildlife.

:06:07. > :06:14.Today, big firms pay to keep it clean. A steel mill might be the

:06:14. > :06:19.last place you would expect to be wildlife friendly. Just down here, I

:06:19. > :06:24.am looking at a tiny blue-tailed damsel fly. It is a damsel fly

:06:24. > :06:30.because its wings are rested behind its back. It's got a blue tip to its

:06:30. > :06:34.abdomen and this one, right here, is a female and I know that because it

:06:34. > :06:40.is laying eggs under the leaf. This unlikely wildlife oasis is slap bang

:06:40. > :06:44.in the middle of forge master, one of the biggest foundries in

:06:44. > :06:49.Sheffield. It is inviting nature into an industrial area. It is a

:06:49. > :06:56.nice place for employers to come and use on their breaks and lunch time.

:06:56. > :07:00.It is a nice place to come and escape. We have sandmartins at the

:07:00. > :07:10.moment nesting, butterflies and we have had otters spotted on sight as

:07:10. > :07:14.

:07:14. > :07:20.well. Otter?Yes. On sight here?-- on the site here? That's right.

:07:20. > :07:25.on the five weirs walk. It opened five years ago, creating a wildlife

:07:25. > :07:31.corridor through Sheffield's industrial heartland. It only came

:07:31. > :07:35.about by chance in the mid-'80s. was working as a town planner. One

:07:35. > :07:41.lunch time, myself and a couple of colleagues scrambled down a gap

:07:41. > :07:44.between the bridge and the factory to have a look at the river and we

:07:44. > :07:51.came across this 16th Century weir. We thought this is amazing. Why

:07:51. > :07:56.can't people visit this? From that, we decided to set a trust up.

:07:56. > :08:02.years later, after millions of pounds were raised, the walk was

:08:02. > :08:05.finally opened in 2008. It is beyond what we could have dreamed, really.

:08:05. > :08:12.It's been so satisfying and so rewarding to see the river coming

:08:12. > :08:18.back to life, nature does most of it, but being able to help it along.

:08:18. > :08:23.Keeping the Don clean is a big job for volunteers working with the

:08:23. > :08:27.river stewardship company. The focus is on the River Don. This bankside

:08:27. > :08:31.vegetation is really important as well? It provides refuge for a lot

:08:31. > :08:38.of wildlife. It was a habitat that was lost for long periods of time?

:08:38. > :08:41.Most of this section isn't natural anymore and the banks have been

:08:41. > :08:46.build-up so the native vegetation has been squeezed into such a small

:08:46. > :08:53.area now. Before, it would have spread for quite a way from the Don.

:08:53. > :09:03.We have a nice woodland and aquatic plants in front of us? We have some

:09:03. > :09:11.

:09:11. > :09:15.nice figwort here. Yeah, it's really good for the insects as a food

:09:15. > :09:25.source. You have some nasty aliens as well? Yes. That is one of the

:09:25. > :09:29.jobs that the volunteers are doing down here, helping to eradicate the

:09:29. > :09:35.Japanese knotweed. If we were to leave the banks here, all of this

:09:35. > :09:43.bank would be covered in nothing but knotweed. What is the plant life

:09:43. > :09:46.like in the river? This section of the Don is coated in water crowfoot.

:09:46. > :09:51.You can see these beautiful white flowers. This is the most wonderful

:09:51. > :09:57.sign the river is in a healthy state. It will be full of

:09:57. > :10:00.invertebrates which are food for loads of other animals. We could be

:10:00. > :10:07.in the Peak District, but if you glance over that wall, it's

:10:07. > :10:12.industry! We are in the heart of the industrial belt. The health of the

:10:12. > :10:16.Don must be reflected by what swims in it. Tony Richardson has known the

:10:16. > :10:22.river for more than 50 years and remembers when the water ran orange

:10:22. > :10:30.with industrial pollution. How's it going? Well, I have caught these in

:10:30. > :10:39.20 minutes. Beautiful. Look at that. Fabulous. Lovely. That beautiful

:10:39. > :10:44.long dorsel fin. They are gorgeous fish. Beautiful fish. They just like

:10:44. > :10:50.the freshest of fresh water and they will not live in any pollution. I

:10:50. > :10:54.used to spend a lot of money going out to Lincolnshire or North

:10:54. > :10:58.Yorkshire, or on the Trent. Now I don't have to. This is just ten

:10:58. > :11:04.minutes away from where I live. It is good. It doesn't cost me anything

:11:04. > :11:08.in petrol! What is a good day's fishing? A good day for me - in

:11:08. > :11:14.three hours I could have about 25 to 30 fish and they are all decent

:11:14. > :11:18.fish. They are all like this, sometimes. So I will leave Tony to

:11:18. > :11:28.liberate his catch back into the Don to ensure they live to fight another

:11:28. > :11:29.

:11:29. > :11:34.day. I'm at a secret location and we have been given a tip-off about a

:11:34. > :11:37.badger sett backing on to some gardens. Just behind me, the sun is

:11:37. > :11:42.setting so the badgers will emerge soon. So we will have to get into

:11:42. > :11:46.position quick. This is a really good indication that the woods are

:11:46. > :11:52.being used by badgers. It is one of their tracks and runs between

:11:52. > :11:59.feeding areas and their sett. They are creatures of habit. This is a

:11:59. > :12:03.good sign. These woods are surrounded by housing on all sides.

:12:03. > :12:10.Most of the people living here will have no idea who their nocturnal

:12:10. > :12:15.neighbours are. We are getting close to the sett now. I will have to do

:12:15. > :12:19.something I very rarely do - whisper! Badger watching is not just

:12:19. > :12:23.about being patient and silent. You need to be lucky, too. If the wind

:12:23. > :12:27.is in the wrong direction, they will smell you and you have no chance.

:12:27. > :12:32.But tonight we are downwind of the sett so our scent doesn't carry

:12:32. > :12:37.which is a good job as a badger's sense of smell is 800 times more

:12:37. > :12:42.sensitive than ours. Finally, after hours of waiting, the midge bites

:12:42. > :12:52.seem worth it as we are 25 feet away when a badger emerges. It looks like

:12:52. > :12:53.

:12:53. > :12:59.a large male. That is a big adult badger. It's such a thrill to see

:13:00. > :13:05.such a large animal thriving in our towns and cities. And another treat

:13:05. > :13:10.- Mrs Badger then emerges to have a look and to sniff. It may be there

:13:10. > :13:14.are cubs inside but we don't get to meet the whole family, sadly. That

:13:14. > :13:18.is it from Sheffield and I have to say what a cast of wildlife

:13:18. > :13:24.characters. Keeley Donovan has been to another green oasis in the heart

:13:24. > :13:34.of urban Yorkshire, which hundreds of commuters pass right by every day

:13:34. > :13:39.

:13:39. > :13:44.often without as much as a second It's amazing just how much you can

:13:44. > :13:48.miss on your daily commute. Even on a journey you have made every day

:13:48. > :13:54.for years, as you hurry to work there might be some natural wonders

:13:54. > :13:57.you have overlooked a few paces away. That's exactly why I have come

:13:57. > :14:01.to Shipley station just minutes from Bradford. If it wasn't for the

:14:01. > :14:06.efforts of one woman, this small unremarkable piece of land, about

:14:07. > :14:10.the size of a tennis court, it wouldn't be here at all. Artist and

:14:10. > :14:15.naturalist Susan Stead has spent the last two decades defending this

:14:15. > :14:21.meadow. Hello. Hello.Nice to meet you. You have chosen a beautiful day

:14:21. > :14:25.for it. I have.You capturing the blues? The blue is the common blue

:14:25. > :14:30.butterfly that is anything but common in these parts. It's the

:14:30. > :14:40.meadow's star turn. I have arrived and I nearly missed it. How did you

:14:40. > :14:43.stumble across it? In 1988 there was a small paragraph about blue

:14:43. > :14:48.butterflies in Shipley station. Apparently, somebody had been

:14:49. > :14:55.tidying up part of the station and pulling up yellow buds which the

:14:55. > :15:00.blues feed on. I then decided to come down here and investigate and

:15:00. > :15:03.at that time, this field here was part of a huge big meadow.

:15:03. > :15:09.Eventually British Rail was persuaded not to use what was left

:15:09. > :15:13.of the land for car parking and Susan Stead's campaign culminated in

:15:13. > :15:19.David Bellamy opening the Shipley station butterfly meadow 20 years

:15:19. > :15:24.ago this summer. The meadow is only open to the public on a few days

:15:24. > :15:29.every year because of the fragility of the habitat. More than 50 kinds

:15:29. > :15:34.of plants have been found here and 14 species of butterflies and moths.

:15:34. > :15:37.Because of the cold spring, only three had so far emerged, including

:15:37. > :15:42.the common blue and the meadow brown. Why is it so important to

:15:42. > :15:47.keep this meadow? We shouldn't have to damage a wonderful wildlife area

:15:47. > :15:54.like this for a car park. The common blue is one of the species which is

:15:54. > :16:00.very down in number throughout the UK, as a lot of species are. And we

:16:00. > :16:07.need to conserve as many areas as we can for butterflies and plants

:16:07. > :16:12.because we are losing a lot of our wildlife. So, this little oasis of

:16:12. > :16:22.meadowland remains here by chance and the wildlife exists hemmed in by

:16:22. > :16:23.

:16:23. > :16:27.tarmac and largely unnoticed by the station's busy travellers.

:16:27. > :16:33.As the light fades, I have come to York to see if I can find some

:16:33. > :16:40.creatures who prefer the night. I don't normally spend my evenings in

:16:40. > :16:45.graveyards, but I am told this place really comes alive after dark. I'm

:16:45. > :16:47.about to go trapping with moth expert David Chesmore. It is very

:16:47. > :16:53.bright here in the graveyard in the dead of night. What have you got set

:16:53. > :16:58.up here? It is an ultraviolet light which attracts the moths. They don't

:16:58. > :17:02.all come out at night. There is quite a lot of daytime flying moths.

:17:02. > :17:09.What is the difference between a moth and a butterfly? There isn't

:17:09. > :17:13.really. The difference is supposed to be that the butterfly rests with

:17:14. > :17:19.its wings up and the moths with its wings down. There are exceptions.

:17:19. > :17:24.is not long before the light has brought in some flying visitors.

:17:24. > :17:30.This pretty little creature is called a swallowtail. I thought all

:17:30. > :17:35.moths were just brown and boring. It is one of 1,800 varieties of moth

:17:35. > :17:38.that we have here in Yorkshire. It is 11.30pm and we must have caught

:17:38. > :17:42.or seen about 15 to 20 different varieties of moth. That is just in

:17:42. > :17:47.the last hour. We are going to give it the course of the night and come

:17:47. > :17:52.back first thing to see what else we have got. As York wakes up and gets

:17:52. > :17:56.on the move, I'm on my way to see what's in the moth trap. The

:17:56. > :18:05.graveyard is a great natural habitat because it's remained untouch for

:18:05. > :18:08.nearly 200 years. Morning, David. Good morning. So, what have we got?

:18:08. > :18:15.Despite the temperature dropping to 10 Celsius, there are still some

:18:15. > :18:19.wonderful moths. This is a burnished brass. It is gripping to my hand.It

:18:19. > :18:25.is warming itself up getting ready to fly. Take a look at this guy.

:18:25. > :18:29.Absolutely beautiful. This is my favourite. The garden tiger. It is

:18:29. > :18:34.quite docile because it's cool but it is going to warm itself up on my

:18:34. > :18:39.hand. It's been a very cold spring, so a lot of moths have been delayed

:18:39. > :18:44.a lot. We haven't seen that many moths so far this year. The numbers

:18:44. > :18:49.are building up. Not all moths are welcome. This horse chestnut could

:18:49. > :18:57.be seriously damaged by them. one of these blotches is a

:18:57. > :19:06.caterpillar living inside the leaf. In there? These are tiny moths.Just

:19:06. > :19:11.about make them out. Do they destroy the tree? It causes loss because

:19:11. > :19:14.these little moths, every successive generation, about three generations

:19:14. > :19:21.a year will mind different parts of the leaf. So the leaves go brown and

:19:21. > :19:25.they drop off. And can't take in sunlight? No.So, what have I found

:19:25. > :19:30.out about butterflies and moths? Butterflies like to fly during the

:19:30. > :19:35.day, although some don't. Moths prefer to fly at night, although

:19:35. > :19:38.some of them prefer to fly during the day. So I am confused! What I do

:19:38. > :19:43.know is they are beautiful, fascinating and diverse creatures

:19:43. > :19:48.that you can find in your own back garden. You need to take time out to

:19:48. > :19:51.marvel at them. Mike's travelled from South to East

:19:51. > :19:55.Yorkshire for our final look at the wildlife you might find in your

:19:55. > :20:01.urban area. This is Prince's Avenue, one of the

:20:01. > :20:11.main thoroughfares into and out of Hull. It's also just two minutes

:20:11. > :20:21.

:20:21. > :20:27.from an aquatic oasis teeming with I have not come here to see a man

:20:27. > :20:35.swimming in his garden pond. I am here to catch up with these little

:20:35. > :20:39.fellas who share it with him! you coming in? The water is lovely.

:20:39. > :20:43.Bill Marsden has spent tens of thousands of pounds building this

:20:43. > :20:48.swimming pond so he could share his daily dip with newts and other

:20:48. > :20:54.amphibians. Come on, tell me how this crazy garden pond came about?

:20:54. > :21:00.had a bit of money. We decided what could we do that is different?

:21:00. > :21:06.have planted all these native plants around? All the planting around the

:21:06. > :21:09.edges provide what is necessary to make the water sweet. It is

:21:09. > :21:14.effectively rain water. The wildlife responded immediately? Nothing has

:21:14. > :21:19.been introduced. When we first set up the pond, we filled it to check

:21:19. > :21:25.that there was no leaks and we heard these plop, plop, plop from above.

:21:25. > :21:28.It was beetles. They had seen the water. They were flying up there and

:21:29. > :21:35.they were all diving in. It was amazing. Lots of aquatic insects.

:21:35. > :21:39.The stars, of course, are the newts. There are thousands of newts. In the

:21:39. > :21:44.breeding season, you would put in a net and you would come up as many as

:21:44. > :21:50.you like. We should swim off and find a few. Let's do that.The water

:21:50. > :21:54.is quite clear, but even so, it is hard to get close enough for a

:21:54. > :22:02.really good look without frightening the newts away. So we have put some

:22:02. > :22:06.in a tank to give you a closer look. These are smooth newts. They are in

:22:06. > :22:11.their breeding finery there. The males are fabulous creatures. They

:22:11. > :22:18.have a crest, starting behind the head and going all the way right

:22:18. > :22:24.down to the tip of the tail. The females are a bit more understated.

:22:24. > :22:28.The male uses that crest and his tail to waft in front of the female

:22:28. > :22:34.to beguile her, to get her all excited so they can mate and the

:22:34. > :22:39.female, during the breeding season, will probably lay up to 200 eggs. It

:22:39. > :22:44.is not like frogs where they lay a mass of eggs together. The female

:22:44. > :22:49.will lay individual eggs. The most amazing thing is people think the

:22:49. > :22:55.newts spend their lives in the water. It spends far more time on

:22:55. > :23:00.dry land. I have to say this is just about the best wildlife garden pond

:23:00. > :23:05.I have ever seen. It's astonishing how much is in here.

:23:05. > :23:15.Bill has had enough for one day. But he and his wife can come back any

:23:15. > :23:16.

:23:16. > :23:20.time they choose. And I have got pond envy!

:23:20. > :23:24.Having dried off and warmed up, I'm after some wildlife that flies

:23:24. > :23:29.rather than swims. But this little chap has had a few problems with his

:23:29. > :23:34.usual mode of transport. He's been rescued by the East Yorkshire Bat

:23:34. > :23:39.Group. He is called Lazy Boy. He is like me. He is a bit reluctant to go

:23:39. > :23:43.to the gym and, in his case, he is reluctant to fly. A member of the

:23:43. > :23:46.public found him on a road in a village outside of Hull and they

:23:46. > :23:50.rang up because if you see a bat during the daytime, they probably

:23:50. > :23:55.need your help. Any chance we can have a look at his wing? Is that

:23:55. > :24:00.possible? They are just so beautiful. There we go.Look at

:24:00. > :24:05.that. Look how fine his wing actually is. On the leading edge,

:24:05. > :24:09.that is his thumb? Yeah.The rest is fingers of a hand and the skin is

:24:09. > :24:15.stretched between them. That's right. He's got the same bones that

:24:15. > :24:21.we have got in our hands. His fingers are incredibly long. I think

:24:21. > :24:27.we should see some bats in the wild. Let's make a move. Let's do it!

:24:27. > :24:31.Let's go batting! Joining us is a group of fellow bat

:24:31. > :24:41.spotters and we are heading for a nearby park that's ideal for these

:24:41. > :24:44.

:24:44. > :24:50.wonderful flying mammals. There you go. Which species are these? These

:24:50. > :24:56.will be common pipistrelles. These are very clever bits of kit?

:24:57. > :25:02.Amazing. They turn the ultrasound that the bats are making during echo

:25:02. > :25:07.location audible so we can hear it. There you go. A bat phone!LAUGHTER

:25:07. > :25:17.Armed with our bat detectors we can hear them, but we want to see them,

:25:17. > :25:20.

:25:20. > :25:28.too. Woah! Straight past us. There we go. One near the water. Woah!

:25:28. > :25:33.That was within a metre of my nose. Very close. LAUGHTER They are

:25:33. > :25:40.whizzing over our heads. What did you get there? Common pipistrelle.

:25:40. > :25:44.Feeding buzz. Explain a feeding buzz? It sounds like a raspberry!

:25:44. > :25:49.Somebody blowing a raspberry. If they are coming into feed, that is

:25:49. > :25:53.the noise they will make. Every single road around this park is

:25:53. > :25:58.stacked with houses and they act as perfect roosts for the bats in the

:25:58. > :26:02.park. They have the bed and in here, they have the breakfast, or evening

:26:02. > :26:06.meal? If you have a snack bar at the end of your street, why would you

:26:06. > :26:14.travel any further? That is what this park is providing for the bats

:26:14. > :26:18.in the avenues and the streets around here. I have a soprano.

:26:18. > :26:22.have. I have 55 here. Soprano is coming through. We have changed the

:26:22. > :26:31.frequency of some of the bat detectors. We have got two different

:26:31. > :26:39.species. There is the pipistrelle calling at 45 and another species at

:26:39. > :26:43.55, the soprano pipistrelle. Early the next morning, with the sun

:26:43. > :26:48.not long up, it is time for my final wildlife stakeout. Again, we are

:26:48. > :26:51.trying to catch a glimpse of another elusive creature. I have come to a

:26:51. > :26:56.drain which runs through a housing estate a few miles from the centre

:26:56. > :27:01.of Hull. I'm on the trail of the water vole and have been told they

:27:01. > :27:11.inhabit the banks of this waterway. I don't think I have seen a stretch

:27:11. > :27:14.of water with so much litter in. The water itself is really clean. The

:27:14. > :27:20.vegetation on the banks, it is fabulous habitat for lots of

:27:20. > :27:25.animals. It is a great wildlife spot. After a four-hour wait, three

:27:25. > :27:29.of them in the pouring rain, we catch one on camera. Oh, yes! Water

:27:29. > :27:35.vole. Just briefly swimming between one side of the drain and the other.

:27:35. > :27:41.You can see its head sticking up and it dips down to its back and its

:27:41. > :27:46.bottom sticks out. A V-shaped wake behind it. Oh, what a terrific spot!

:27:46. > :27:50.This is such an elusive mammal. Really hard to catch up with. It

:27:51. > :27:59.needs patience. Then, two further glimpses. It has been worth the

:27:59. > :28:03.wait. The water vole has declined across Britain by as much as 95%.

:28:03. > :28:08.The reasons for this are primarily due to loss of habitat and also

:28:08. > :28:12.pollution in the river systems. The final nail in the coffin is the

:28:12. > :28:17.introduction of the American mink that's cleared whole water systems

:28:17. > :28:27.of their water voles. The one area that they seem to be doing OK is

:28:27. > :28:28.

:28:28. > :28:33.urban areas like this. Mink really don't like people and dog walkers.