Gerrit Vyn / Northern elephant seal (Mirounga angustirostris) vocalizing. Males threaten each other with the snort, a sound caused by expelling air though the proboscis. Piedras Blancas, California, USA. December.
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Gerrit Vyn / Northern elephant seal (Mirounga angustirostris) vocalizing. Males threaten each other with the snort, a sound caused by expelling air though the proboscis. Piedras Blancas, California, USA. December.
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Cheryl-Samantha Owen / Rainbow trout (Oncorhynchus mykiss) caught in net as part of an eradication program, Krom River, Cedarberg Mountains, Western Cape, South Africa. A species introduced to the Krom River for angling pur...
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LYNN M. STONE / Grizzly bears (Ursus arctos horribilis) threaten each other with open mouths as they compete over who will occupy a favored fishing site, McNeil River, Alaska, USA, July
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Norbert Wu / Flying Gurnard (Dactylopterus volitans) unfolds large wings to confuse and threaten predators, Saba Island, Netherlands Antilles, Caribbean
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WILLIAM OSBORN / Dead feral Domestic cats shot and displayed in tree. W Simpson desert, S Australia cats
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WILLIAM OSBORN / Dead Red foxes shot and displayed in tree {Vulpes vulpes} W Simpson desert, S
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WILLIAM OSBORN / Dead feral Domestic cats shot and displayed in tree. W Simpson desert, South Australia. cats
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Nick Upton / Jackdaw (Corvus monedula) swooping down calling with claws raised to threaten a Grey squirrel (Sciurus carolinensis) in the entrance to a nest box the bird wants to nest in which is already occupied b...
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Nick Upton / Jackdaw (Corvus monedula) swooping in very close to threaten a Grey squirrel (Sciurus carolinensis) as it stands in the entrance to a nest box the bird wants to nest in which is already occupied by th...
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Nick Upton / Jackdaw (Corvus monedula) swooping down calling with claws raised to threaten a Grey squirrel (Sciurus carolinensis) in the entrance to a nest box the bird wants to nest in which is already occupied b...
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Nick Upton / Jackdaw (Corvus monedula) swooping down calling with claws raised to threaten a Grey squirrel (Sciurus carolinensis) in the entrance to a nest box the bird wants to nest in which is already occupied b...