Mark Carwardine / Brown bear (Ursus arctos) female, standing at edge of river, Great Bear Rainforest, British Columbia, Canada. October.
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Staffan Widstrand / RF - Atlantic puffin (Fratercula arctica) portrait, Hornoya bird cliff Island, Vardoe, Varanger Peninsula, Finnmark, Norway. June. (This image may be licensed either as rights managed or royalty free....
Staffan Widstrand / Shag (Phalacrocorax aristotelis) head portrait, Hornoya bird cliff island, Varanger Peninsula, Finnmark, Norway. June.
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Staffan Widstrand / RF - Whimbrel (Numenius phaeopus) portrait, Varanger Peninsula, Finnmark, Norway. June. (This image may be licensed either as rights managed or royalty free.)
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Staffan Widstrand / RF - European golden plover (Pluvialis apricaria) portrait, Varanger Peninsula, Finnmark, Norway. June. (This image may be licensed either as rights managed or royalty free.)
Joel Sartore / Photo Ark / Raja shelduck (Radjah radjah rufitergum) quacking, portrait, Sylvan Heights Bird Park. Captive, occurs in Australia and New Guinea.
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Joel Sartore / Photo Ark / Raja shelduck (Radjah radjah rufitergum) portrait, Sylvan Heights Bird Park. Captive, occurs in Australia and New Guinea.
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Joel Sartore / Photo Ark / Nubian bustard (Neotis nuba) portrait, Al Marmoom Desert Conservation Reserve. Captive, occurs in sub-Saharan Africa.
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Joel Sartore / Photo Ark / Nubian bustard (Neotis nuba) portrait, Al Marmoom Desert Conservation Reserve. Captive, occurs in sub-Saharan Africa.
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Joel Sartore / Photo Ark / Nubian bustard (Neotis nuba) head portrait, Al Marmoom Desert Conservation Reserve. Captive, occurs in sub-Saharan Africa.
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Joel Sartore / Photo Ark / Nubian bustard (Neotis nuba) head portrait, Al Marmoom Desert Conservation Reserve. Captive, occurs in sub-Saharan Africa.
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Joel Sartore / Photo Ark / Nubian bustard (Neotis nuba) portrait, Al Marmoom Desert Conservation Reserve. Captive, occurs in sub-Saharan Africa.
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Joel Sartore / Photo Ark / Nubian bustard (Neotis nuba) portrait, Al Marmoom Desert Conservation Reserve. Captive, occurs in sub-Saharan Africa.
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Joel Sartore / Photo Ark / White-bellied bustard (Eupodotis senegalensis canicollis) head portrait, Wadi Al Safa Wildlife Center. Captive, occurs in East Africa.
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Joel Sartore / Photo Ark / White-bellied bustard (Eupodotis senegalensis canicollis) portrait, Wadi Al Safa Wildlife Center. Captive, occurs in East Africa.
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Joel Sartore / Photo Ark / White-bellied bustard (Eupodotis senegalensis canicollis) head portrait, Wadi Al Safa Wildlife Center. Captive, occurs in East Africa.
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Joel Sartore / Photo Ark / Two MacQueen's bustard (Chlamydotis macqueenii) chicks, aged four days, portrait, National Avian Research Center, UAE. Captive.
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Joel Sartore / Photo Ark / Two MacQueen's bustard (Chlamydotis macqueenii) chicks, aged four days, portrait, National Avian Research Center, UAE. Captive.
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Joel Sartore / Photo Ark / Two MacQueen's bustard (Chlamydotis macqueenii) chicks, aged four days, portrait, National Avian Research Center, UAE. Captive.
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Joel Sartore / Photo Ark / Arabian bustards (Ardeotis arabs) pair, male larger than the female, portrait, National Avian Research Center, UAE. Captive.
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Joel Sartore / Photo Ark / Arabian bustards (Ardeotis arabs) pair, male larger than the female, portrait, National Avian Research Center, UAE. Captive.
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Joel Sartore / Photo Ark / Arabian bustards (Ardeotis arabs) pair, male larger than the female, head portrait, National Avian Research Center, UAE. Captive.
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Joel Sartore / Photo Ark / Arabian bustards (Ardeotis arabs) pair, male larger than the female, portrait, National Avian Research Center, UAE. Captive.
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Joel Sartore / Photo Ark / Arabian bustard (Ardeotis arabs) head portrait, National Avian Research Center, UAE. Captive.
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Joel Sartore / Photo Ark / Arabian bustards (Ardeotis arabs) pair, male larger than the female, portrait, National Avian Research Center, UAE. Captive.
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Joel Sartore / Photo Ark / Arabian bustard (Ardeotis arabs) head portrait, National Avian Research Center, UAE. Captive.
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Joel Sartore / Photo Ark / Arabian bustards (Ardeotis arabs) pair, male larger than the female, portrait, National Avian Research Center, UAE. Captive.
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Joel Sartore / Photo Ark / Green-winged trumpeter (Psophia viridis) portrait, Mantenedor da Fauna Silvestre Cariua, Brazil. Captive.
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Joel Sartore / Photo Ark / Green-winged trumpeter (Psophia viridis) portrait, Mantenedor da Fauna Silvestre Cariua, Brazil. Captive.
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Joel Sartore / Photo Ark / Green-winged trumpeter (Psophia viridis) head portrait, Mantenedor da Fauna Silvestre Cariua, Brazil. Captive.
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Joel Sartore / Photo Ark / White-bellied bustard (Eupodotis senegalensis erlangeri) head portrait, Zoo Berlin. Captive, occurs in Africa.
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Joel Sartore / Photo Ark / White-bellied bustard (Eupodotis senegalensis erlangeri) portrait, Zoo Berlin. Captive, occurs in Africa.
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Joel Sartore / Photo Ark / White-bellied bustard (Eupodotis senegalensis erlangeri) head portrait, Zoo Berlin. Captive, occurs in Africa.
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Joel Sartore / Photo Ark / White-bellied bustard (Eupodotis senegalensis erlangeri) portrait, Zoo Berlin. Captive, occurs in Africa.
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Joel Sartore / Photo Ark / Great bustard (Otis tarda tarda) portrait, Tierpark Berlin, Germany. Captive.
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Joel Sartore / Photo Ark / Great bustard (Otis tarda tarda) head portrait, Tierpark Berlin, Germany. Captive.
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Joel Sartore / Photo Ark / Grey-winged trumpeter (Psophia crepitans crepitans) portrait, Dallas World Aquarium. Captive, occurs in South America.
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Joel Sartore / Photo Ark / Lesser snow goose (Anser caerulescens caerulescens) blue phase, head portrait, Pinola Conservancy, USA. Captive.