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    • Population
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Alcedo giant tortoise (Chelonoidis vandenburghi), Alcedo Volcano, Isabela Island. This is where the largest extant population exists, acting as ecosystem engineers by maintaining open meadows and digg...  -  Tui De Roy
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Tui De Roy / Alcedo giant tortoise (Chelonoidis vandenburghi), Alcedo Volcano, Isabela Island. This is where the largest extant population exists, acting as ecosystem engineers by maintaining open meadows and digg...
Bowhead whale (Balaena mysticetus), group socialising in shallow water, aerial view. Part of larger group of more than 50 whales congregating, Sea of Okhotsk sub-population, Russia.  -  Tony Wu
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Tony Wu / Bowhead whale (Balaena mysticetus), group socialising in shallow water, aerial view. Part of larger group of more than 50 whales congregating, Sea of Okhotsk sub-population, Russia.
Snowy Owl (Bubo scandiacus) fluffing feathers, this image was taken during a massive increase in the range and population of snowy owls. Boundary Bay, Canada. March.  -  Gerrit  Vyn
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Gerrit Vyn / Snowy Owl (Bubo scandiacus) fluffing feathers, this image was taken during a massive increase in the range and population of snowy owls. Boundary Bay, Canada. March.
African elephant (Loxodonta africana) hanging upside down, during translocation by Kenya Wildlife Service, due to over population, Mwaluganje Reserve, Kenya. October 2006.  -  Cyril Ruoso
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Cyril Ruoso / African elephant (Loxodonta africana) hanging upside down, during translocation by Kenya Wildlife Service, due to over population, Mwaluganje Reserve, Kenya. October 2006.
Norway lemming (Lemmus lemmus) jumping aggressively, during the lemming population explosion, Vauldalen, Norway, May, 2011.  -  Erlend Haarberg
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Erlend Haarberg / Norway lemming (Lemmus lemmus) jumping aggressively, during the lemming population explosion, Vauldalen, Norway, May, 2011.
Julia Coats of the Animal and Plant Health Agency releasing Eurasian beaver (Castor fiber) back into River Otter. Part of escaped population re-released to the wild following veterinary check ups. Tak...  -  Nick Upton
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Nick Upton / Julia Coats of the Animal and Plant Health Agency releasing Eurasian beaver (Castor fiber) back into River Otter. Part of escaped population re-released to the wild following veterinary check ups. Tak...
Eurasian beaver (Castor fiber) entering the River Otter after release. Part of escaped population re-released to the wild following veterinary check ups. Taken on the second day of Beaver releases aft...  -  Nick Upton
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Nick Upton / Eurasian beaver (Castor fiber) entering the River Otter after release. Part of escaped population re-released to the wild following veterinary check ups. Taken on the second day of Beaver releases aft...
Hammer Headed bats (Hypsignathus monstrosus) in gloved hand - live mist net catch for blood sampling in search of the unknown reservoir host for Ebola virus. Ebola outbreaks in Mbomo in 2003 killed 12...  -  Jabruson
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Jabruson / Hammer Headed bats (Hypsignathus monstrosus) in gloved hand - live mist net catch for blood sampling in search of the unknown reservoir host for Ebola virus. Ebola outbreaks in Mbomo in 2003 killed 12...
Western Gorilla (Gorilla gorilla) silverback skull with butterfly (Belenois theszi). Gorilla diedd from the Ebola Virus, which killed 128 people in the region in 2003 and in 2005 killed 95% of the Gor...  -  Jabruson
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Jabruson / Western Gorilla (Gorilla gorilla) silverback skull with butterfly (Belenois theszi). Gorilla diedd from the Ebola Virus, which killed 128 people in the region in 2003 and in 2005 killed 95% of the Gor...
Timelapse of commuters walking through Shibuya Station at rush hour, Shibuya, Tokyo, Honshu, Japan, 2011.  -  Gavin Hellier
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Gavin Hellier / Timelapse of commuters walking through Shibuya Station at rush hour, Shibuya, Tokyo, Honshu, Japan, 2011.
Timelapse of crowds of people crossing the centre of Shibuya shopping and entertainment district, Tokyo, Japan, 2011.  -  Gavin Hellier
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Gavin Hellier / Timelapse of crowds of people crossing the centre of Shibuya shopping and entertainment district, Tokyo, Japan, 2011.
Timelapse of crowds of people crossing the centre of Shibuya shopping and entertainment district, Tokyo, Japan, 2011.  -  Gavin Hellier
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Gavin Hellier / Timelapse of crowds of people crossing the centre of Shibuya shopping and entertainment district, Tokyo, Japan, 2011.
Timelapse of crowds of people crossing the centre of Shibuya shopping and entertainment district, Tokyo, Japan, 2011.  -  Gavin Hellier
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Gavin Hellier / Timelapse of crowds of people crossing the centre of Shibuya shopping and entertainment district, Tokyo, Japan, 2011.
Adult Badger (Meles meles) at entrance to sett, with some young Domestic cattle in the background, Derbyshire, England, UK, May 2012 (non-ex).  -  Andrew Parkinson
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Andrew Parkinson / Adult Badger (Meles meles) at entrance to sett, with some young Domestic cattle in the background, Derbyshire, England, UK, May 2012 (non-ex).
Rothschild's giraffe (Giraffa camelopardalis rothschildi), Murchison Falls National Park, Uganda, East Africa.  Murchison Falls National Park hosts the only remaining naturally occurring population of...  -  Cheryl-Samantha Owen
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Cheryl-Samantha Owen / Rothschild's giraffe (Giraffa camelopardalis rothschildi), Murchison Falls National Park, Uganda, East Africa. Murchison Falls National Park hosts the only remaining naturally occurring population of...
Tree Sparrow (Passer montanus) (right) and Yellowhammer (Emberiza citrinella) foraging on snow. Perthshire, Scotland, January. Did you know? The Tree sparrow population in UK dropped by 93% between 19...  -  Fergus Gill / 2020VISION
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Fergus Gill / 2020VISION / Tree Sparrow (Passer montanus) (right) and Yellowhammer (Emberiza citrinella) foraging on snow. Perthshire, Scotland, January. Did you know? The Tree sparrow population in UK dropped by 93% between 19...
Black-footed Ferret (Mustela nigripes) seen in its burrow. The species is endangered on account of prey depletion and vulnerability to foreign infection. Declared extinct in the wild in 1987, a succes...  -  Roland Seitre
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Roland Seitre / Black-footed Ferret (Mustela nigripes) seen in its burrow. The species is endangered on account of prey depletion and vulnerability to foreign infection. Declared extinct in the wild in 1987, a succes...
Black-footed Ferret (Mustela nigripes). The species is endangered on account of prey depletion and vulnerability to foreign infection. Declared extinct in the wild in 1987, a successful breeding progr...  -  Roland Seitre
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Roland Seitre / Black-footed Ferret (Mustela nigripes). The species is endangered on account of prey depletion and vulnerability to foreign infection. Declared extinct in the wild in 1987, a successful breeding progr...
View of the River Till, part of area where The Tweed Foundation are monitoring the population and spread of Signal Crayfish (Pacifastacus leniusculus), Northumberland, England, UK, October  -  Rob Jordan / 2020VISION
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Rob Jordan / 2020VISION / View of the River Till, part of area where The Tweed Foundation are monitoring the population and spread of Signal Crayfish (Pacifastacus leniusculus), Northumberland, England, UK, October
Signal crayfish (Pacifastacus leniusculus) in a defensive posture after being caught by The Tweed Foundation monitoring the species population and spread on the River Till, Northumberland, England, UK...  -  Rob Jordan / 2020VISION
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Rob Jordan / 2020VISION / Signal crayfish (Pacifastacus leniusculus) in a defensive posture after being caught by The Tweed Foundation monitoring the species population and spread on the River Till, Northumberland, England, UK...
Signal crayfish (Pacifastacus leniusculus) in a defensive posture after being caught by The Tweed Foundation monitoring the species population and spread on the River Till, Northumberland, England, UK...  -  Rob Jordan / 2020VISION
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Rob Jordan / 2020VISION / Signal crayfish (Pacifastacus leniusculus) in a defensive posture after being caught by The Tweed Foundation monitoring the species population and spread on the River Till, Northumberland, England, UK...
Red deer (Cervus elaphus) about to cross busy road, Richmond Park, London, UK, September. Did you know? Richmond Park is famous for its red deer, but it also has a thriving population of fallow deer.  -  Terry Whittaker / 2020VISION
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Terry Whittaker / 2020VISION / Red deer (Cervus elaphus) about to cross busy road, Richmond Park, London, UK, September. Did you know? Richmond Park is famous for its red deer, but it also has a thriving population of fallow deer.
Bass Rock at dawn, North Berwick, Scotland, UK, August. 2020VISION Book Plate. Did you know? Approximately an eighth of the world's Northern gannet population breeds on Bass Rock.  -  Peter Cairns / 2020VISION
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Peter Cairns / 2020VISION / Bass Rock at dawn, North Berwick, Scotland, UK, August. 2020VISION Book Plate. Did you know? Approximately an eighth of the world's Northern gannet population breeds on Bass Rock.
Puffin (Fratercula arctica) standing on a rock, posing for a tourist holding a camera, Shetland Isles, Scotland, UK, July 2011. 2020VISION Book Plate. Did you know? Although the largest colonies of pu...  -  Peter Cairns / 2020VISION
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Peter Cairns / 2020VISION / Puffin (Fratercula arctica) standing on a rock, posing for a tourist holding a camera, Shetland Isles, Scotland, UK, July 2011. 2020VISION Book Plate. Did you know? Although the largest colonies of pu...
Urban Red fox (Vulpes vulpes) cub climbing into litter bin, West London, UK, June. Did you know? Red foxes first colonised British cities in the 1940s and now their greatest population densities are f...  -  Terry Whittaker / 2020VISION
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Terry Whittaker / 2020VISION / Urban Red fox (Vulpes vulpes) cub climbing into litter bin, West London, UK, June. Did you know? Red foxes first colonised British cities in the 1940s and now their greatest population densities are f...
Grey seal (Halichoerus grypus) surfacing beneath cliffs, Lundy Island, Devon, UK, June. Did you know? The grey seal is one of the rarest seals in the world, and the UK holds around 40% of the world po...  -  Alex Mustard / 2020VISION
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Alex Mustard / 2020VISION / Grey seal (Halichoerus grypus) surfacing beneath cliffs, Lundy Island, Devon, UK, June. Did you know? The grey seal is one of the rarest seals in the world, and the UK holds around 40% of the world po...
Osprey (Pandion haliaeetus) in flight, fishing at dawn, Rothiemurchus forest, Cairngorms NP, Scotland, UK, July. Photographer quote: ""This female, caught at first light, has two hungry chicks waiting...  -  Peter Cairns / 2020VISION
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Peter Cairns / 2020VISION / Osprey (Pandion haliaeetus) in flight, fishing at dawn, Rothiemurchus forest, Cairngorms NP, Scotland, UK, July. Photographer quote: ""This female, caught at first light, has two hungry chicks waiting...
Two Bottlenose dolphins (Tursiops truncatus) breaching, Moray Firth, Inverness-shire, Scotland, UK, August. Did you know? Scotland is home to the most northerly population of bottlenose dolphins on ea...  -  John MacPherson / 2020VISION
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John MacPherson / 2020VISION / Two Bottlenose dolphins (Tursiops truncatus) breaching, Moray Firth, Inverness-shire, Scotland, UK, August. Did you know? Scotland is home to the most northerly population of bottlenose dolphins on ea...
Gannet (Morus bassanus) portrait, Bass Rock, Firth of Forth, Scotland, UK, June. Did you know? Britain is home to 70% of the world's Gannet population.  -  Peter Cairns / 2020VISION
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Peter Cairns / 2020VISION / Gannet (Morus bassanus) portrait, Bass Rock, Firth of Forth, Scotland, UK, June. Did you know? Britain is home to 70% of the world's Gannet population.
Pine Marten (Martes martes) adult female in caledonian forest, The Black Isle, Highlands, Scotland, UK, July. Did you know? In Scotland, pine martens moderate the population of the invasive grey squir...  -  Terry Whittaker / 2020VISION
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Terry Whittaker / 2020VISION / Pine Marten (Martes martes) adult female in caledonian forest, The Black Isle, Highlands, Scotland, UK, July. Did you know? In Scotland, pine martens moderate the population of the invasive grey squir...
Grey seals (Halichoerus grypus) two adults fighting in the surf, Donna Nook, Lincolnshire, England, UK, October. Photographer quote: "Sex and violence  grey seals are good at both! These two adolesce...  -  Danny Green / 2020VISION
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Danny Green / 2020VISION / Grey seals (Halichoerus grypus) two adults fighting in the surf, Donna Nook, Lincolnshire, England, UK, October. Photographer quote: "Sex and violence grey seals are good at both! These two adolesce...
Red Fox (Vulpes vulpes) resting amongst autumn leaves, looking up, scratching, Leicestershire, England, UK, September. Did you know? Each year around 100,000 foxes are killed on our roads but the over...  -  Danny Green / 2020VISION
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Danny Green / 2020VISION / Red Fox (Vulpes vulpes) resting amongst autumn leaves, looking up, scratching, Leicestershire, England, UK, September. Did you know? Each year around 100,000 foxes are killed on our roads but the over...
Flock of Red knot (Calidris canutus) in flight, long exposure, winter plumage, Snettisham RSPB reserve, Norfolk, England, UK, October. Did you know? The Wash Estuary in Norfolk is estimated to have a...  -  Chris Gomersall / 2020VISION
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Chris Gomersall / 2020VISION / Flock of Red knot (Calidris canutus) in flight, long exposure, winter plumage, Snettisham RSPB reserve, Norfolk, England, UK, October. Did you know? The Wash Estuary in Norfolk is estimated to have a...
Old male Grey seal (Halichoerus grypus) with mouth wide open showing worn teeth, Lundy Island, Bristol Channel, England, UK, May. 2020VISION Book Plate. Did you know? Grey seals have double in populat...  -  Alex Mustard / 2020VISION
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Alex Mustard / 2020VISION / Old male Grey seal (Halichoerus grypus) with mouth wide open showing worn teeth, Lundy Island, Bristol Channel, England, UK, May. 2020VISION Book Plate. Did you know? Grey seals have double in populat...
A group of Rockhopper Penguins (Eudyptes chrysocome) under long coastal grasses. The world population of Northern Rockhopper has declined by 90% in the past 60 years. Nightingale Island, Tristan da Cu...  -  Troels Jacobsen/Arcticphoto
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Troels Jacobsen/Arcticphoto / A group of Rockhopper Penguins (Eudyptes chrysocome) under long coastal grasses. The world population of Northern Rockhopper has declined by 90% in the past 60 years. Nightingale Island, Tristan da Cu...
A group of Rockhopper Penguins (Eudyptes chrysocome). The world population of Northern Rockhopper has declined by 90% in the past 60 years. Quest Bay, Gough Island. UNESCO World Heritage site, March.  -  Troels Jacobsen/Arcticphoto
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Troels Jacobsen/Arcticphoto / A group of Rockhopper Penguins (Eudyptes chrysocome). The world population of Northern Rockhopper has declined by 90% in the past 60 years. Quest Bay, Gough Island. UNESCO World Heritage site, March.
Harvested potatoes in Virunga Volcanoes National Park with agricultural land behind and forest beyond where the mountain gorillas live, Rwanda, April 2010. Encroachment of the human population on habi...  -  Andy Rouse
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Andy Rouse / Harvested potatoes in Virunga Volcanoes National Park with agricultural land behind and forest beyond where the mountain gorillas live, Rwanda, April 2010. Encroachment of the human population on habi...
Polar bear (Ursus maritimus) head portrait of adult scenting the wind, Arctic National Wildlife Refuge, Alaska  -  Steven Kazlowski
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Steven Kazlowski / Polar bear (Ursus maritimus) head portrait of adult scenting the wind, Arctic National Wildlife Refuge, Alaska
Western Sandpipers (Calidris mauri) and Dunlin (Calidris alpina) roosing during spring migration. Gray's Harbor County, Washington, USA, April.  -  Gerrit Vyn
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Gerrit Vyn / Western Sandpipers (Calidris mauri) and Dunlin (Calidris alpina) roosing during spring migration. Gray's Harbor County, Washington, USA, April.
Flock of Heermann's Gulls (Larus heermanni) standing on intertidal rocks. Jefferson County, Washington, USA, August.  -  Gerrit Vyn
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Gerrit Vyn / Flock of Heermann's Gulls (Larus heermanni) standing on intertidal rocks. Jefferson County, Washington, USA, August.
Large shoal of Horse mackerel (Megalaspis cordyla) schooling. Rinca, Komodo National Park, Indonesia.  -  Georgette Douwma
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Georgette Douwma / Large shoal of Horse mackerel (Megalaspis cordyla) schooling. Rinca, Komodo National Park, Indonesia.
Christmas Island Red Crabs (Gecarcoidea natalis)  crossing road in huge numbers during annual migration, Christmas Island, Indian Ocean, Australian Territory  -  Ingo Arndt
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Ingo Arndt / Christmas Island Red Crabs (Gecarcoidea natalis) crossing road in huge numbers during annual migration, Christmas Island, Indian Ocean, Australian Territory
Flock of Bramblings (Fringilla montifringilla) perched together in branches. It's estimated that four  million individiuals return to roost during winter in Black Forest, Germany. February.  -  Ingo Arndt
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Ingo Arndt / Flock of Bramblings (Fringilla montifringilla) perched together in branches. It's estimated that four million individiuals return to roost during winter in Black Forest, Germany. February.
Christmas Island Red Crabs (Gecarcoidea natalis) shortly before sunrise sitting on rock ready for spawning, Christmas Island, Indian Ocean, Australian Territory  -  Ingo Arndt
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Ingo Arndt / Christmas Island Red Crabs (Gecarcoidea natalis) shortly before sunrise sitting on rock ready for spawning, Christmas Island, Indian Ocean, Australian Territory
Flock of Cattle Egrets (Bubulcus ibis) in roosting trees at dusk, Imba Ndutu, Serengeti NP, Tanzania, East Africa.  -  Mary McDonald
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Mary McDonald / Flock of Cattle Egrets (Bubulcus ibis) in roosting trees at dusk, Imba Ndutu, Serengeti NP, Tanzania, East Africa.
Bryde's whale (Balaenoptera brydei / edeni) swimming over a bait ball of Sardines, three ridges on forehead that distinguish the Bryde's whale from other mysticetes are prominently visible. Off Baja C...  -  Doug Perrine
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Doug Perrine / Bryde's whale (Balaenoptera brydei / edeni) swimming over a bait ball of Sardines, three ridges on forehead that distinguish the Bryde's whale from other mysticetes are prominently visible. Off Baja C...
Large group of Californian sealions (Zalophus californianus) swimming underwater, Anacapa Island, California, Pacific Ocean  -  Jeff Rotman
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Jeff Rotman / Large group of Californian sealions (Zalophus californianus) swimming underwater, Anacapa Island, California, Pacific Ocean
Shoal of Pacific / South african sardines (Sardinops sagax) Monterey Bay Aquarium,  USA  -  Ingo Arndt
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Ingo Arndt / Shoal of Pacific / South african sardines (Sardinops sagax) Monterey Bay Aquarium, USA
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