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Kenya, Narok County, Masai Mara National Reserve. Long columns of Wildebeest cross the grassy plains of Masai Mara during the annual migration of these antelopes.
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Kenya, Masai Mara, Narok County. White-bearded Gnus, or wildebeest, cross the Mara River during their annual migration.
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Kenya, Narok County, Masai Mara National Reserve. A large herd of Wildebeest crosses the grassy plains of Masai Mara during the annual migration of these antelopes.
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Kenya, Masai Mara, Narok County. Large columns of Wildebeest wind across the grassy plains of Masai Mara National Reserve during their annual migration.
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Kenya, Narok County, Masai Mara National Reserve. Thousands of Wildebeest converge on the grassy plains of Masai Mara during the annual migration of these antelopes.
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Kenya, Narok County, Masai Mara National Reserve. Long columns of Wildebeest cross the grassy plains of Masai Mara during the annual migration of these antelopes.
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A flock of migrating sanderlings (Calidris alba) taking flight on Sand Dollar Beach, Baja California Sur, Mexico, North America
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Kenya, Narok County, Masai Mara National Reserve. Zebras swim across the Mara River as Nile crocodiles lie in wait to grab the weakest.
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Kenya, Narok County, Masai Mara National Reserve. Zebras swim across the Mara River watched by a large hippo.
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Underwater low angle view of school of spotted eagle rays (Aetobatus narinari), Cancun, Mexico
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Kenya, Narok County, Masai Mara National Reserve. The late afternoon sun catches the beards of White-bearded Gnus crossing the verdant plains in Masai Mara.
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Africa, Kenya, Masai Mara, Narok County. Hot air balloons floating over the Wildebeest migration.
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Kenya, Narok County, Masai Mara National Reserve. Long columns of Wildebeest cross the grassy plains of Masai Mara during the annual migration of these antelopes.
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Wildebeest massing to cross the Mara River during their annual migration from the Serengeti National Park in Northern Tanzania to the Masai Mara National Reserve.
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Trumpeter swans in flight during Spring migration, Marsh Lake, Yukon Territory, Canada
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View of three Sandhill Cranes in flight over Creamer's Field, Fairbanks, Interior Alaska
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Underwater view of mobula rays gathering for migration around the Yucatan Peninsula, Contoy Island, Quintana Roo, Mexico
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Wildebeest crossing the Mara River during their annual migration from the Serengeti National Park in Northern Tanzania to the Masai Mara National Reserve.
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Wildebeest crossing the Mara River during their annual migration from the Serengeti National Park in Northern Tanzania to the Masai Mara National Reserve.
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Alaska, USA. Salmon running in the shallows near Valdez, Prince William Sound, during August.
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View of the Porcupine Caribou herd climbing a steep bank after swimming across the Hulahula River during their annual migration in ANWR, Arctic Alaska, Summer
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USA,Alaska,Copper River Delta. Western Sandpipers (Calidris mauri) and Dunlin (Calidris alpina),in spring migration,stop to feed on the tidal flats of the Copper River Delta. Virtually the entire population of Western Sandpipers passes through the region during the springtime.
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USA,Alaska. Arctic tern in the Alaska Range. Arctic terns have the longest migration of all birds,travelling up to 40,000 KM/year (25,000 miles).
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Geese Flying in V-Formation, Migrating South for Winter, Oregon, USA
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During the annual migration of up to 1.5 million wildebeest from Serengeti,Tanzania,to the Mara and back each year,the animals ford or swim across the Mara River on several occasions. At times,their crossing places are badly chosen and many drown.
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USA,Alaska. Arctic tern in the Alaska Range. Arctic terns have the longest migration of all birds,travelling up to 40,000 KM/year (25,000 miles).
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During the annual migration of up to 1.5 million wildebeest from Serengeti,Tanzania,to the Mara and back each year,the animals ford or swim across the Mara River on several occasions.
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An aerial photograph of wildebeest during their migration in Masai Mara. Up to 1.5 million wildebeest join the migration from Serengeti,Tanzania,to the Mara and back each year.
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An aerial photograph of the wildebeest migration in Masai Mara. Up to 1.5 million wildebeest join the migration from Serengeti,Tanzania,to the Mara and back each year.
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During the annual migration of up to 1.5 million wildebeest from Serengeti,Tanzania,to the Mara and back each year,the animals ford or swim across the Mara River on several occasions.
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COMPOSITE: Trumpeter Swans in flight at sunset over the Tongass National Forest, Inside Passage, Southeast Alaska, Spring
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Kenya,Narok district,Masai Mara. A herd of wildebeest rushes down a steep bank to cross the Mara River in Masai Mara National Reserve.
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Nomadic transhumance with bactrian camels in snow covered winter landscape, Province of Khovd, Mongolia, Central Asia, Asia
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Staging flock of mostly Western Sandpipers lining edges of tidal creek during Spring migration on the Copper River Delta,Southcentral Alaska
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Porcupine Caribou herd crossing Turner River Arctic National Wildlife Refuge Arctic AK Summer
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Large herds of white-bearded wildebeest,the vanguard of the annual migration,on the plains of the western Serengeti
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Western Arctic Caribou herd migrating north near Cape Lisburne Brooks Range Alaska Spring
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View of the Porcupine Caribou herd crossing the Hulahula River near Old Man Creek during their annual migration through ANWR, Arctic Alaska, Summer
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Underwater view of mobula rays gathering for migration around the Yucatan Peninsula, Contoy Island, Quintana Roo, Mexico
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Caribou herd swimming across Kobuk River Arctic Alaska Autumn Kobuk Valley National Park
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Wildebeest crossing Mara River during annual migration, Masai Mara, Kenya, East Africa, Africa
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Wildebeest stampede on the dry grassy plains on the west side of the Ngorongoro Highlands. .
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Wildebeest crossing Mara River during annual migration, Masai Mara, Kenya, East Africa, Africa
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During the annual migration of up to 1.5 million wildebeest from Serengeti,Tanzania,to the Mara and back each year,the animals ford or swim across the Mara River on several occasions.
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During the annual migration of up to 1.5 million wildebeest from Serengeti,Tanzania,to the Mara and back each year,the animals ford or swim across the Mara River on several occasions.
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USA,Alaska Copper River Delta. Western Sandpipers (Calidris mauri) and Dunlin (Calidris alpina),in spring migration,stop to feed on the tidal flats of the Copper River Delta. Virtually the entire population of Western Sandpipers passes through the region during the springtime.
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Safari vehicles lined up at a Mara River crossing to witness the Great Migration, Masai Mara, Kenya. Several drowned wildebeest can be seen in the forground victims from earlier crossings.
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Kenya, Masai Mara, Narok County. A female cheetah with her 6 three month old male cub resting on a termite mound at dawn.
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An aerial photograph of the wildebeest migration in Masai Mara. Up to 1.5 million wildebeest join the migration from Serengeti,Tanzania,to the Mara and back each year.
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USA,Alaska. Arctic tern in the Alaska Range. Arctic terns have the longest migration of all birds,travelling up to 40,000 KM/year (25,000 miles).
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A large herd of buffalos cross a tributary of the Okavango River in the Okavango Delta of northwest Botswana.
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Geese Flying in V-Formation, Migrating South for Winter, Oregon, USA
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Monarch Butterflies, Sierra Chincua Butterfly Sanctuary, Angangueo, Michoacan, Mexico
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Wildebeest crossing Mara River during annual migration, Masai Mara, Kenya, East Africa, Africa
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A large herd of Wildebeest and Burchell’s zebra come down to drink water at Sand River,close to the border of the Serengeti National Park and Masai Mara Game Reserve.
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Kenya,Narok district,Masai Mara. A herd of wildebeest rushes down a steep bank to cross the Mara River in Masai Mara National Reserve.
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A large herd of Wildebeest and Burchell’s zebra come down to drink water at Sand River,close to the border of the Serengeti National Park and Masai Mara Game Reserve,Kenya
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USA,Alaska,Copper River Delta. Western Sandpipers (Calidris mauri) and Dunlin (Calidris alpina),in spring migration,stop to feed on the tidal flats of the Copper River Delta. Virtually the entire population of Western Sandpipers passes through the region during the springtime.
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USA,Alaska,Copper River Delta. Western Sandpipers (Calidris mauri) and Dunlin (Calidris alpina),in spring migration,stop to feed on the tidal flats of the Copper River Delta. Virtually the entire population of Western Sandpipers passes through the region during the springtime.
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Caribou bulls swimming across Kobuk River Arctic Alaska Autumn Kobuk Valley National Park
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USA,Alaska,Copper River Delta. Western Sandpipers (Calidris mauri) and Dunlin (Calidris alpina),in spring migration,stop to feed on the tidal flats of the Copper River Delta. Virtually the entire population of Western Sandpipers passes through the region during the springtime.
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Kenya,Masai Mara,Narok District. Long columns of wildebeest zigzag through open grassy plains during the annual Wildebeest migration from the Serengeti National Park in Northern Tanzania to the Masai Mara National Reserve in Southern Kenya.
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Kenya. Vultures and a marabou stork roost in trees near a herd of wildebeest in Masai Mara National Reserve.
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Nomadic transhumance with bactrian camels in winter landscape, Province of Khovd, Mongolia, Central Asia, Asia
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A large herd of Wildebeest and Burchell’s zebra come down to drink water at Sand River,close to the border of the Serengeti National Park and Masai Mara Game Reserve.
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Whimbrel roosting with Western Sandpipers in Odiak Slough during Spring migration, Copper River Delta,Southcentral Alaska
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USA,Alaska Copper River Delta. Western Sandpipers (Calidris mauri) and Dunlin (Calidris alpina),in spring migration,stop to feed on the tidal flats of the Copper River Delta. Virtually the entire population of Western Sandpipers passes through the region during the springtime.
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USA,Alaska. Arctic tern in the Alaska Range. Arctic terns have the longest migration of all birds,travelling up to 40,000 KM/year (25,000 miles).
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Gaggle of Canada Geese congregate in a field in Palmer with Chugach Mountains in the background, Matanuska-Susitna Valley, Southcentral Alaska, Spring
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Wildebeest swimming across the Mara River during their annual migration from the Serengeti National Park in Northern Tanzania to the Masai Mara National Reserve.
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Kenya,Maasai Mara,Narok district. As wildebeest swim across the Mara River during their annual migration from the Serengeti National Park in Northern Tanzania to the Masai Mara National Reserve in Southern Kenya,a large crocodile comes to attack one of them.
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Western Arctic Caribou herd migrating north in spring through Delong Mountains Brooks Range Western Alaska
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An aerial photograph of a long line of wildebeest during their migration in Masai Mara. Up to 1.5 million wildebeest join the migration from Serengeti,Tanzania,to the Mara and back each year.
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Kenya, Masai Mara, Narok County. White-bearded Gnus, or wildebeest, mass on the banks of the Mara River in readiness to cross during their annual migration.
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An aerial photograph of a long line of wildebeest during their migration in Masai Mara. Up to 1.5 million wildebeest join the migration from Serengeti,Tanzania,to the Mara and back each year.
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Caribou bulls swimming across Kobuk river at sunset Arctic Alaska Autumn Kobuk Valley National Park
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