George Sanker / Bald Eagle (Haliaeetus leucocephalus) harassed by American crow (Corvus brachyrhynchos). Acadia National Park, Maine, USA. June.
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David Tipling / White-necked Rockfowl (Picathartes gymnocephalus). Illustration from 1871-1874, plate from Ibis by G Keulemans (1842-1912).
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Barrie Britton / Yellow-headed Picathartes / White necked rockfowl (Picathartes gymnocephalus) Kambui Hills, Sierra Leone, Vulnerable species. Photograph taken on location for BBC Africa series, September 2010.
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Matthew Maran / An American Bald Eagle (Haliaeetus leucocephalus) with remains of fish prey while a crow waits for scraps. Ucluelet, Vancouver Island, Canada, June.
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Sumio Harada / Bald Eagle (Haliaeetus leucocephalus) and Common Raven (Corvus corax) group feeding on carcass, Rocky Mountains, North America
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Sumio Harada / Bald Eagle (Haliaeetus leucocephalus) chasing Common Raven (Corvus corax) group from carcass it was feeding on, Rocky Mountains, North America
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Michael Quinton / Common Raven (Corvus corax) group and a juvenile Bald Eagle (Haliaeetus leucocephalus) fight over a Beaver carcass, Idaho
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Jim Brandenburg / Common Raven (Corvus corax) and Bald Eagle (Haliaeetus leucocephalus) group feeding on deer carcass in snow, Minnesota
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Jim Brandenburg / Bald Eagle (Haliaeetus leucocephalus) pair with Common Raven (Corvus corax) group feeding on deer carcass, Minnesota
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Jim Brandenburg / Bald Eagle (Haliaeetus leucocephalus) attacking other eagle and fighting with Common Raven (Corvus corax) group over deer carcass in the snow, Minnesota
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Lynn M Stone / Two bald eagles and a crow in snow. Alaska
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Matthias Breiter / Bald Eagle (Haliaeetus leucocephalus) and Raven (Corvus corax) in rainforest tree, Tongass National Forest, Ketchikan, Alaska