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Australian Pelican (Pelecanus conspicillatus) flock, New South Wales, Australia
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Gary Bell/ Oceanwide / Australian Pelican (Pelecanus conspicillatus) flock, New South Wales, Australia
Killer whales (Orcinus orca) at the surface in an Arctic fjord in Spildra, northern Norway, with sea birds. Arctic Ocean
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Alex Mustard / Killer whales (Orcinus orca) at the surface in an Arctic fjord in Spildra, northern Norway, with sea birds. Arctic Ocean
Bald eagle (Haliaeetus leucocephalus) perched as Snow geese (Chen caerulescens) fly by, Bosque del Apache National Wildlife Refuge, New Mexico, USA, January.
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Jack Dykinga / Bald eagle (Haliaeetus leucocephalus) perched as Snow geese (Chen caerulescens) fly by, Bosque del Apache National Wildlife Refuge, New Mexico, USA, January.
Snow goose (Chen caerulescens) landing into a tight packed flock on lake, Bosque del Apache National Wildlife Refuge, New Mexico, USA. January.
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Jack Dykinga / Snow goose (Chen caerulescens) landing into a tight packed flock on lake, Bosque del Apache National Wildlife Refuge, New Mexico, USA. January.
Snow goose (Chen caerulescens) landing into flock, Bosque del Apache National Wildlife Refuge, New Mexico, USA, January.
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Jack Dykinga / Snow goose (Chen caerulescens) landing into flock, Bosque del Apache National Wildlife Refuge, New Mexico, USA, January.
Brent geese (Branta bernicla) flying with moon, Titchwell, Norfolk, UK, December
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Ernie Janes / Brent geese (Branta bernicla) flying with moon, Titchwell, Norfolk, UK, December
California brown pelicans (Pelecanus occidentalis californicus) roosting on a mudflat, with a flock of Elegant terns (Thalasseus elegans) nearby, Southern California, USA May/2019
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John Chan / California brown pelicans (Pelecanus occidentalis californicus) roosting on a mudflat, with a flock of Elegant terns (Thalasseus elegans) nearby, Southern California, USA May/2019
Flock of Western sandpipers (Calidris mauri) taking flight from salt marsh, Southern California, USA.
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John Chan / Flock of Western sandpipers (Calidris mauri) taking flight from salt marsh, Southern California, USA.
Greater flamingo (Phoenicopterus ruber) juveniles and a few adults kept temporarily in an enclosure for ringing, Fuente de Piedra lagoon, Malaga, Spain. August.
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Francisco Marquez / Greater flamingo (Phoenicopterus ruber) juveniles and a few adults kept temporarily in an enclosure for ringing, Fuente de Piedra lagoon, Malaga, Spain. August.
Greater flamingo (Phoenicopterus ruber) juveniles and a few adults kept temporarily in an enclosure for ringing, Fuente de Piedra lagoon, Malaga, Spain. August.
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Francisco Marquez / Greater flamingo (Phoenicopterus ruber) juveniles and a few adults kept temporarily in an enclosure for ringing, Fuente de Piedra lagoon, Malaga, Spain. August.
Volunteers rounding up Greater flamingo (Phoenicopterus ruber) juveniles for ringing, Fuente de Piedra lagoon, Malaga, Spain. August.
01620514
Francisco Marquez / Volunteers rounding up Greater flamingo (Phoenicopterus ruber) juveniles for ringing, Fuente de Piedra lagoon, Malaga, Spain. August.
Greater flamingo (Phoenicopterus ruber) flock silhouetted in wetland, Fuente de Piedra lagoon, Malaga, Spain. August.
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Francisco Marquez / Greater flamingo (Phoenicopterus ruber) flock silhouetted in wetland, Fuente de Piedra lagoon, Malaga, Spain. August.
Sandhill cranes (Antigone canadensis) in flight in late evening light, Bosque Del Apache, New Mexico, USA. December
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Jack Dykinga / Sandhill cranes (Antigone canadensis) in flight in late evening light, Bosque Del Apache, New Mexico, USA. December
Flocks of Mallard ducks (Anas platyrhynchos) taking off in tree-lined wetlands. Bosque del Apache National Wildlife Refuge, New Mexico, USA.
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Jack Dykinga / Flocks of Mallard ducks (Anas platyrhynchos) taking off in tree-lined wetlands. Bosque del Apache National Wildlife Refuge, New Mexico, USA.
Yellow-headed blackbirds (Xanthocephalus xanthocephalus) and Redwing blackbirds (Agelaius phoeniceus) roosting. Whitewater Draw Wildlife Area, Arizona, USA, December.
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Jack Dykinga / Yellow-headed blackbirds (Xanthocephalus xanthocephalus) and Redwing blackbirds (Agelaius phoeniceus) roosting. Whitewater Draw Wildlife Area, Arizona, USA, December.
Murmuration of Yellow-headed blackbirds (Xanthocephalus xanthocephalus) and Redwing blackbirds (Agelaius phoeniceus) at sunset, before roosting. Whitewater Draw Wildlife Area, Arizona, USA, December.
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Jack Dykinga / Murmuration of Yellow-headed blackbirds (Xanthocephalus xanthocephalus) and Redwing blackbirds (Agelaius phoeniceus) at sunset, before roosting. Whitewater Draw Wildlife Area, Arizona, USA, December.
Turnstones (Arenaria interpres) and Purple sandpipers (Calidris maritima) over wintering on the beaches of the Orkney Isles, Scotland, UK, April.
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SCOTLAND: The Big Picture / Turnstones (Arenaria interpres) and Purple sandpipers (Calidris maritima) over wintering on the beaches of the Orkney Isles, Scotland, UK, April.
Slow motion clip of Amur falcons (Falco amurensis) congregating at roost site during their migration from Siberia to Africa, near Doyang reservoir, Nagaland, India, October.
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Sandesh Kadur / Slow motion clip of Amur falcons (Falco amurensis) congregating at roost site during their migration from Siberia to Africa, near Doyang reservoir, Nagaland, India, October.
Amur falcons (Falco amurensis) congregating during their migration from Siberia to Africa, near Doyang reservoir, Nagaland, India, October.
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Sandesh Kadur / Amur falcons (Falco amurensis) congregating during their migration from Siberia to Africa, near Doyang reservoir, Nagaland, India, October.
Amur falcons (Falco amurensis) congregating during their migration from Siberia to Africa, near Doyang reservoir, Nagaland, India, October.
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Sandesh Kadur / Amur falcons (Falco amurensis) congregating during their migration from Siberia to Africa, near Doyang reservoir, Nagaland, India, October.
Aerial shot of a fishing boat catching Atlantic herring (Clupea harenguis), with Killer whales (Orcinus orca) and Humpback whales (Megaptera novaeangliae) swimming around the boat and large numbers of...
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Espen Bergersen / Aerial shot of a fishing boat catching Atlantic herring (Clupea harenguis), with Killer whales (Orcinus orca) and Humpback whales (Megaptera novaeangliae) swimming around the boat and large numbers of...
Aerial shot of a fishing boat catching Atlantic herring (Clupea harenguis), with Killer whales (Orcinus orca) and Humpback whales (Megaptera novaeangliae) swimming around the boats and large numbers o...
01621816
Espen Bergersen / Aerial shot of a fishing boat catching Atlantic herring (Clupea harenguis), with Killer whales (Orcinus orca) and Humpback whales (Megaptera novaeangliae) swimming around the boats and large numbers o...
Aerial shot of Killer whale (Orcinus orca) hunting Atlantic herring (Clupea harengus), Troms, Norway, October.
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Espen Bergersen / Aerial shot of Killer whale (Orcinus orca) hunting Atlantic herring (Clupea harengus), Troms, Norway, October.
Aerial shot of a pod of Killer whales (Orcinus orca) carousel feeding, Skjervoy, Troms, Norway, November.
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Espen Bergersen / Aerial shot of a pod of Killer whales (Orcinus orca) carousel feeding, Skjervoy, Troms, Norway, November.
Snow buntings (Plectrophenax nivalis) flock in flight during a snowstorm, New York, USA, January.
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Marie Read / Snow buntings (Plectrophenax nivalis) flock in flight during a snowstorm, New York, USA, January.
Black skimmers (Rynchops niger), three in non-breeding plumage on beach, Fort De Soto Park, St. Petersburg, Florida, USA. January. Digitally altered to remove distractions.
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Marie Read / Black skimmers (Rynchops niger), three in non-breeding plumage on beach, Fort De Soto Park, St. Petersburg, Florida, USA. January. Digitally altered to remove distractions.
Magnificent Frigatebirds (Fregata magnificens) trying to steal fish from fishermen coming on land with a fresh catch, Puerto Lopez , Santa Elena Peninsula, Manabi Province, Ecuador, July
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David Pattyn / Magnificent Frigatebirds (Fregata magnificens) trying to steal fish from fishermen coming on land with a fresh catch, Puerto Lopez , Santa Elena Peninsula, Manabi Province, Ecuador, July
RF - Mute swans (Cygnus olor) flock of non breeding adults, Fleet lagoon Dorset, England, UK, June. (This image may be licensed either as rights managed or royalty free.)
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Ernie Janes / RF - Mute swans (Cygnus olor) flock of non breeding adults, Fleet lagoon Dorset, England, UK, June. (This image may be licensed either as rights managed or royalty free.)
White-fronted goose (Anser albifrons) and Taiga bean goose (Anser fabalis rossicus) flocks in flight and on water. Latvia. April.
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Markus Varesvuo / White-fronted goose (Anser albifrons) and Taiga bean goose (Anser fabalis rossicus) flocks in flight and on water. Latvia. April.
Large murmuration of Common starlings (Sturnus vulgaris) swirling over reedbed roost at sunset, Ham Wall RSPB Reserve, Somerset, England, UK, January.
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John Waters / Large murmuration of Common starlings (Sturnus vulgaris) swirling over reedbed roost at sunset, Ham Wall RSPB Reserve, Somerset, England, UK, January.
Large flock of Common starlings (Sturnus vulgaris) swirling over reedbed roost at dusk, Ham Wall RSPB Reserve, Somerset, England, UK, November.
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John Waters / Large flock of Common starlings (Sturnus vulgaris) swirling over reedbed roost at dusk, Ham Wall RSPB Reserve, Somerset, England, UK, November.
Large flock of Common starlings (Sturnus vulgaris) swirling over reedbed roost at dusk, Ham Wall RSPB Reserve, Somerset, England, UK, November.
01621271
John Waters / Large flock of Common starlings (Sturnus vulgaris) swirling over reedbed roost at dusk, Ham Wall RSPB Reserve, Somerset, England, UK, November.
Elegant terns (Thalasseus elegans) courting, Southern California, USA, March.
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John Chan / Elegant terns (Thalasseus elegans) courting, Southern California, USA, March.
Griffon vulture (Gyps fulvus) landing on coast next to flock. Cantabria, Spain, March.
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Juan Carlos Munoz / Griffon vulture (Gyps fulvus) landing on coast next to flock. Cantabria, Spain, March.
Lesser Flamingo (Phoenicopterus minor) flock flying, Lake Magadi, Kenya
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Paul Souders/ Worldfoto / Lesser Flamingo (Phoenicopterus minor) flock flying, Lake Magadi, Kenya
Lesser Flamingo (Phoenicopterus minor) flock nesting on island, Lake Natron, Tanzania
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Paul Souders/ Worldfoto / Lesser Flamingo (Phoenicopterus minor) flock nesting on island, Lake Natron, Tanzania
Lesser Flamingo (Phoenicopterus minor) nesting colony, Lake Natron, Tanzania
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Paul Souders/ Worldfoto / Lesser Flamingo (Phoenicopterus minor) nesting colony, Lake Natron, Tanzania
Northern Pintail (Anas acuta) males flying with female in spring courtship display, Montana
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Donald M. Jones / Northern Pintail (Anas acuta) males flying with female in spring courtship display, Montana
Avalanche on Gullemot (Uria aalge) nesting cliff on first day birds return to breed. Finnmark, Norway. March.
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Pal Hermansen / Avalanche on Gullemot (Uria aalge) nesting cliff on first day birds return to breed. Finnmark, Norway. March.
Atlantic Sailfish (Istiophorus albicans) and Magnificent Frigatebird (Fregata magnificens) flock hunting Round Sardinella (Sardinella aurita) school, Isla Mujeres, Mexico
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Tim Fitzharris / Atlantic Sailfish (Istiophorus albicans) and Magnificent Frigatebird (Fregata magnificens) flock hunting Round Sardinella (Sardinella aurita) school, Isla Mujeres, Mexico
Common Crane (Grus grus) flock flying dangerously close to windmill, Mecklenburg-Vorpommern, Germany
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Holger Duty/ BIA / Common Crane (Grus grus) flock flying dangerously close to windmill, Mecklenburg-Vorpommern, Germany
Eurasian magpies (Pica pica) five gathering prior to going to roost Hortobagy National Park, Hungary January
01609027
David Tipling / Eurasian magpies (Pica pica) five gathering prior to going to roost Hortobagy National Park, Hungary January
Red-and-green macaw (Ara chloropterus) flock flying in front of clay lick. Heath River, Tambopata / Bahuaja-Sonene Reserves, Amazonia, Peru / Bolivia border.
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Nick Garbutt / Red-and-green macaw (Ara chloropterus) flock flying in front of clay lick. Heath River, Tambopata / Bahuaja-Sonene Reserves, Amazonia, Peru / Bolivia border.
Large flock of Red knot (Calidris canutus) moving at high tide roost, in winter plumage, Snettisham RSPB Reserve, Norfolk, England, UK, September.
01608271
Chris Gomersall / Large flock of Red knot (Calidris canutus) moving at high tide roost, in winter plumage, Snettisham RSPB Reserve, Norfolk, England, UK, September.
Sandhill cranes (Grus canadensis) flying in to land at sunset  in golden light, Bosque del Apache National Wildlife Refuge, New Mexico, USA, December.
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Jack Dykinga / Sandhill cranes (Grus canadensis) flying in to land at sunset in golden light, Bosque del Apache National Wildlife Refuge, New Mexico, USA, December.
Budgerigars (Melopsittacus undulatus) flocking to find water, Northern Territory, Australia
01590830
Paul Williams / Budgerigars (Melopsittacus undulatus) flocking to find water, Northern Territory, Australia
Slow motion clip of a mixed flock of Teal (Anas crecca) and Wigeon (Anas penelope) landing in a lake, Greylake RSPB Reserve, Somerset Levels, England, UK, February.
01595284
John Waters / Slow motion clip of a mixed flock of Teal (Anas crecca) and Wigeon (Anas penelope) landing in a lake, Greylake RSPB Reserve, Somerset Levels, England, UK, February.
Large flock of Common starlings (Sturnus vulgaris) flying at dusk, Somerset Levels, England, UK, November.
01593881
Five Films / Large flock of Common starlings (Sturnus vulgaris) flying at dusk, Somerset Levels, England, UK, November.
Large mixed flock of Knot (Calidris canutrus), Dunlin (Calidris alpina) and Golden plover (Pluvialis apricaria) in flight at high tide, Steart Marshes WWT Reserve, Somerset, England, UK, December.
01593078
John Waters / Large mixed flock of Knot (Calidris canutrus), Dunlin (Calidris alpina) and Golden plover (Pluvialis apricaria) in flight at high tide, Steart Marshes WWT Reserve, Somerset, England, UK, December.
Murmuration of Common starlings (Sturnus vulgaris) flying above pier, Aberystwyth, Ceredigion, Wales, UK, October.
01585945
Dave Bevan / Murmuration of Common starlings (Sturnus vulgaris) flying above pier, Aberystwyth, Ceredigion, Wales, UK, October.
Swift (Apus apus) flock screaming  in flight against blue sky and clouds, Monmouthshire Wales, UK,  July.
01585421
Phil Savoie / Swift (Apus apus) flock screaming in flight against blue sky and clouds, Monmouthshire Wales, UK, July.
Swift (Apus apus) flock screaming  in flight against blue sky and clouds, Monmouthshire, Wales, UK, July.
01585412
Phil Savoie / Swift (Apus apus) flock screaming in flight against blue sky and clouds, Monmouthshire, Wales, UK, July.
Swift (Apus apus) flock screaming in flight against blue sky and clouds, Monmouthshire, Wales, UK, July.
01585406
Phil Savoie / Swift (Apus apus) flock screaming in flight against blue sky and clouds, Monmouthshire, Wales, UK, July.
Caribbean Flamingo (Phoenicopterus ruber) breeding colony, Ria Lagartos Biosphere Reserve, Yucatan Peninsula, Mexico, June. Finalist in the Portfolio Category of the Terre Sauvage Nature Images Awards...
01585180
Claudio Contreras / Caribbean Flamingo (Phoenicopterus ruber) breeding colony, Ria Lagartos Biosphere Reserve, Yucatan Peninsula, Mexico, June. Finalist in the Portfolio Category of the Terre Sauvage Nature Images Awards...
Caribbean Flamingo (Phoenicopterus ruber) chick creche in front of attentive adult flamingo group, breeding colony, Ria Lagartos Biosphere Reserve, Yucatan Peninsula, Mexico, June, Finalist in the Por...
01585173
Claudio Contreras / Caribbean Flamingo (Phoenicopterus ruber) chick creche in front of attentive adult flamingo group, breeding colony, Ria Lagartos Biosphere Reserve, Yucatan Peninsula, Mexico, June, Finalist in the Por...
Caribbean Flamingo (Phoenicopterus ruber) chick group walking around the breeding colony, Ria Lagartos Biosphere Reserve, Yucatan Peninsula, Mexico, June, Finalist in the Portfolio Category of the Ter...
01585169
Claudio Contreras / Caribbean Flamingo (Phoenicopterus ruber) chick group walking around the breeding colony, Ria Lagartos Biosphere Reserve, Yucatan Peninsula, Mexico, June, Finalist in the Portfolio Category of the Ter...
Aerial view of Caribbean Flamingo (Phoenicopterus ruber) breeding colony, Ria Lagartos Biosphere Reserve, Yucatan Peninsula, Mexico, May, Finalist in the Portfolio Category of the Terre Sauvage Nature...
01585168
Claudio Contreras / Aerial view of Caribbean Flamingo (Phoenicopterus ruber) breeding colony, Ria Lagartos Biosphere Reserve, Yucatan Peninsula, Mexico, May, Finalist in the Portfolio Category of the Terre Sauvage Nature...
Slow motion close-up of a large group of Fulmars (Fulmarus glacialis) feeding from a fish processing plant outfall, Grundafjordur, Iceland, March.
01582109
Terry Whittaker / Slow motion close-up of a large group of Fulmars (Fulmarus glacialis) feeding from a fish processing plant outfall, Grundafjordur, Iceland, March.
Mixed flock of Wigeon (Anas penelope) and Northern lapwings (Vanellus vanellus) disturbed by hunting Marsh Harrier (Circus aeruginosus), Greylake RSPB Reserve, Somerset Levels,  England, UK, December.
01580954
John Waters / Mixed flock of Wigeon (Anas penelope) and Northern lapwings (Vanellus vanellus) disturbed by hunting Marsh Harrier (Circus aeruginosus), Greylake RSPB Reserve, Somerset Levels, England, UK, December.
Slow motion clip of a flock of Northern lapwings (Vanellus vanellus) flying over a flooded marsh, Catcott Lows Nature Reserve, Somerset Levels,  England, UK, December.
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John Waters / Slow motion clip of a flock of Northern lapwings (Vanellus vanellus) flying over a flooded marsh, Catcott Lows Nature Reserve, Somerset Levels, England, UK, December.
Flock of Jackdaws (Corvus monedula) congregating at dusk at communal roost, Belgium, December.
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Philippe Clement / Flock of Jackdaws (Corvus monedula) congregating at dusk at communal roost, Belgium, December.
Greater flamingoes (Phoenicopterus ruber) and Lesser flamingoes (Phoeniconaias minor), Walvis Bay, Namibia.
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Christophe Courteau / Greater flamingoes (Phoenicopterus ruber) and Lesser flamingoes (Phoeniconaias minor), Walvis Bay, Namibia.
Chinstrap penguin (Pygoscelis antarcticus) moving a feather in its nest, Aitcho Island,  South Shetland Islands.
01534978
Frederique Olivier / Chinstrap penguin (Pygoscelis antarcticus) moving a feather in its nest, Aitcho Island, South Shetland Islands.
Chinstrap penguin (Pygoscelis antarcticus) adding a stick to its nest and fighting with a neighbouring pair, Aitcho Island, South Shetland Islands.
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Frederique Olivier / Chinstrap penguin (Pygoscelis antarcticus) adding a stick to its nest and fighting with a neighbouring pair, Aitcho Island, South Shetland Islands.
Panning shot of a Chinstrap penguin (Pygoscelis antarcticus) breeding colony, Aitcho Island, South Shetland Islands.
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Frederique Olivier / Panning shot of a Chinstrap penguin (Pygoscelis antarcticus) breeding colony, Aitcho Island, South Shetland Islands.
Large flock of Guanay cormorants (Phalacrocorax bougainvilli) flying to feed, Ballestas Islands, Peru.
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Frederique Olivier / Large flock of Guanay cormorants (Phalacrocorax bougainvilli) flying to feed, Ballestas Islands, Peru.
Large flock of Guanay cormorants (Phalacrocorax bougainvilli) flying to feed, Ballestas Islands, Peru.
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Frederique Olivier / Large flock of Guanay cormorants (Phalacrocorax bougainvilli) flying to feed, Ballestas Islands, Peru.
Wide angle shot of a large flock of Blue footed boobies (Sula nebouxii) taking off from the sea and diving on a bait ball, Isla Lobos de Terra, Peru.
01534950
Frederique Olivier / Wide angle shot of a large flock of Blue footed boobies (Sula nebouxii) taking off from the sea and diving on a bait ball, Isla Lobos de Terra, Peru.
Wide angle shot of a large flock of Blue footed boobies (Sula nebouxii) taking off from the sea and diving on a bait ball, Isla Lobos de Terra, Peru.
01534948
Frederique Olivier / Wide angle shot of a large flock of Blue footed boobies (Sula nebouxii) taking off from the sea and diving on a bait ball, Isla Lobos de Terra, Peru.
Panning shot of a large flock of Pink-footed geese (Anser brachyrhynchus) taking off from their roosting site, Montrose, Angus, Scotland, UK, November.
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SCOTLAND: The Big Picture / Panning shot of a large flock of Pink-footed geese (Anser brachyrhynchus) taking off from their roosting site, Montrose, Angus, Scotland, UK, November.
Flock of Jackdaws (Corvus mondedula) taking off from their roost site, Gloucestershire, England, UK, December.
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Nick Upton / Flock of Jackdaws (Corvus mondedula) taking off from their roost site, Gloucestershire, England, UK, December.
Lesser flamingo (Phoeniconaias minor) flock in the mist, Lake Nakuru, Kenya. March.
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Denis-Huot / Lesser flamingo (Phoeniconaias minor) flock in the mist, Lake Nakuru, Kenya. March.
Flock of Barnacle geese (Branta leucopsis) flying over the sea, Islay, Inner Hebrides, Scotland, UK, November.
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John & Mary-Lou Aitchison / Flock of Barnacle geese (Branta leucopsis) flying over the sea, Islay, Inner Hebrides, Scotland, UK, November.
Murmuration of Common starlings (Sturnus vulgaris) at dusk, Rome, Italy, December.
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Dietmar Nill / Murmuration of Common starlings (Sturnus vulgaris) at dusk, Rome, Italy, December.
Panning shot of partially flooded pastureland with large flocks of Wigeon (Anas penelope), Lapwings (Vanellus vanellus) and Golden plover (Pluvialis apricaria) in flight, Gloucestershire, England, UK,...
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Nick Upton / Panning shot of partially flooded pastureland with large flocks of Wigeon (Anas penelope), Lapwings (Vanellus vanellus) and Golden plover (Pluvialis apricaria) in flight, Gloucestershire, England, UK,...
Panning shot of a flock of Lapwings (Vanellus vanellus) landing on partially flooded pastureland near resting Black-tailed godwits (Limosa limosa) and grazing Wigeon (Anas penelope), Gloucestershire,...
01465096
Nick Upton / Panning shot of a flock of Lapwings (Vanellus vanellus) landing on partially flooded pastureland near resting Black-tailed godwits (Limosa limosa) and grazing Wigeon (Anas penelope), Gloucestershire,...
Flock of Lapwings (Vanellus vanellus) in flight,  with Golden plover (Pluvialis apricaria) flying in the background, Gloucestershire, England, UK, January.
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Nick Upton / Flock of Lapwings (Vanellus vanellus) in flight, with Golden plover (Pluvialis apricaria) flying in the background, Gloucestershire, England, UK, January.
Flock of Rooks (Corvus frugilegus) roosting in tree at dusk, Hessen, Germany, Europe
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Ingo Arndt / Flock of Rooks (Corvus frugilegus) roosting in tree at dusk, Hessen, Germany, Europe
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.
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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.
Flock of Bramblings (Fringilla montifringilla) roosting together in branches. It's estimated that four  million individiuals roost in the Black Forest, during winter months, Germany. February.
01301190
Ingo Arndt / Flock of Bramblings (Fringilla montifringilla) roosting together in branches. It's estimated that four million individiuals roost in the Black Forest, during winter months, Germany. February.
Flock of Bramblings (Fringilla montifringilla) taking off / landing on branches. It's estimated that four  million individiuals roost in the Black Forest, during winter months, Germany. February.
01301189
Ingo Arndt / Flock of Bramblings (Fringilla montifringilla) taking off / landing on branches. It's estimated that four million individiuals roost in the Black Forest, during winter months, Germany. February.
Flock of Brambling (Fringilla montifringilla) perched at roosting tree, overwintering, Steiermark, Austria
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Ingo Arndt / Flock of Brambling (Fringilla montifringilla) perched at roosting tree, overwintering, Steiermark, Austria
Flock of Bramblings (Fringilla montifringilla) in flight, an estimated four million return to roost  overwinter in Black Forest, Germany, March.
01301081
Ingo Arndt / Flock of Bramblings (Fringilla montifringilla) in flight, an estimated four million return to roost overwinter in Black Forest, Germany, March.
Common starlings (Sturnus vulgaris) flock flying in formation to confuse hunting Peregrine Falcons (Falco peregrinus), Rome, Italy. January 2009
01279730
Ingo Arndt / Common starlings (Sturnus vulgaris) flock flying in formation to confuse hunting Peregrine Falcons (Falco peregrinus), Rome, Italy. January 2009
Large flock of Eastern / Great White Pelican (Pelecanus onocrotalus) preening, Lake Nakuru, Kenya
01198349
Ingo Arndt / Large flock of Eastern / Great White Pelican (Pelecanus onocrotalus) preening, Lake Nakuru, Kenya
Flock of Black skimmers (Rynchops nigra) on beach, New Jersey, USA
01198179
Ingo Arndt / Flock of Black skimmers (Rynchops nigra) on beach, New Jersey, USA
Large flock of Snow Geese (Chen caerulescens) flying, Bosque del Apache National Wildlife Refuge, New Mexico, USA
01198261
Ingo Arndt / Large flock of Snow Geese (Chen caerulescens) flying, Bosque del Apache National Wildlife Refuge, New Mexico, USA
Black skimmer (Rynchops nigra) large flock flying, New Jersey, USA
01198065
Ingo Arndt / Black skimmer (Rynchops nigra) large flock flying, New Jersey, USA
Greater Flamingo (Phoenicopterus ruber) flock flying, Los Flamencos Sanctuary, Guajira Peninsula, Colombia
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Thomas Marent / Greater Flamingo (Phoenicopterus ruber) flock flying, Los Flamencos Sanctuary, Guajira Peninsula, Colombia
Common Crane (Grus grus) flock at sunrise, Brandenburg, Germany
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Thomas Krumenacker/ BIA / Common Crane (Grus grus) flock at sunrise, Brandenburg, Germany
White-fronted Goose (Anser albifrons) group flying, North Rhine-Westphalia, Germany
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Hans Glader/ BIA / White-fronted Goose (Anser albifrons) group flying, North Rhine-Westphalia, Germany
Snow geese (Chen caerulescens) large flock with some landing, Bosque del Apache, New Mexico, USA, December.
01563048
Jack Dykinga / Snow geese (Chen caerulescens) large flock with some landing, Bosque del Apache, New Mexico, USA, December.
Snow Goose (Chen caerulescens) flock in pond at sunrise, Bosque del Apache National Wildlife Refuge, New Mexico
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Tim Fitzharris / Snow Goose (Chen caerulescens) flock in pond at sunrise, Bosque del Apache National Wildlife Refuge, New Mexico
Demoiselle crane (Anthropoides virgo) low angle fisheye perspective of feeding cranes. Khichan, Western Rajasthan, India. February, 2015
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Yashpal Rathore / Demoiselle crane (Anthropoides virgo) low angle fisheye perspective of feeding cranes. Khichan, Western Rajasthan, India. February, 2015
Demoiselle crane (Anthropoides virgo) resting on sand dunes during winter migration, Khichan, Western Rajasthan, India. March.
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Yashpal Rathore / Demoiselle crane (Anthropoides virgo) resting on sand dunes during winter migration, Khichan, Western Rajasthan, India. March.
Demoiselle crane (Anthropoides virgo) low angle view of birds flying and landing near the chugga ghar (bird feeding enclosure ) in Khichan Village, durin their annual migration. Western Rajasthan, Ind...
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Yashpal Rathore / Demoiselle crane (Anthropoides virgo) low angle view of birds flying and landing near the chugga ghar (bird feeding enclosure ) in Khichan Village, durin their annual migration. Western Rajasthan, Ind...