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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
Rights-Managed
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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
Rights-Managed
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Wildebeest crossing Mara River during annual migration, Masai Mara, Kenya, East Africa, Africa
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Africa, Tanzania, herd of Blue Wildebeests (Connochaetes taurinus) running across muddy savannah
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View of the Porcupine Caribou herd heading up the bank from a gravel bar by Hulahula River in ANWR, Arctic Alaska, Summer
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A group of cow and calf caribou migrate through Gates of the Arctic National Park & Preserve in the area near the Alatna River headwaters, Arctic Alaska, Fall
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Africa, Tanzania, Blue Wildebeests (Connochaetes taurinus) and Plains Zebras (Equus quagga)
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Caribou migrate through Gates of the Arctic National Park & Preserve near the Alatna River headwaters, Arctic Alaska, Fall
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Kenya. White-bearded gnu follow in line along the Oloololo Escarpment in Masai Mara National Reserve during annual migration.
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Kenya. White-bearded gnus on the move in Masai Mara National Reserve during their annual migration.
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Africa, Tanzania, Blue Wildebeests (Connochaetes taurinus) and Plains Zebras (Equus quagga)
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A group of bull caribou migrate through Gates of the Arctic National Park & Preserve in the area near the Alatna River headwaters, Arctic Alaska, Fall
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Grizzly sub adult male sits on a rock in the middle of Brooks River waiting for spawning Sockeye salmon, Katmai National Park and Preserve, Southwest Alaska, Summer
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Grizzly boar opens wide for Sockeye salmon jumping up Brooks Falls in Katmai National Park & Preserve, Southwest Alaska, Summer
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Aerial view of caribou near an oil pipeline on the tundra of the coastal plain, Arctic Alaska, Summer
Rights-Managed
