Danny Green / Japanese cranes (Grus japonensis) displaying in snow, Hokkaido, Japan, February
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Juan Carlos Munoz / Black howler monkeys (Alouatta caraya) male and two females calling from tree, captive, Apenheul Park, Netherlands.
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Michael Durham / A three year old boy with a Pacific Tree Frog (Pseudacris regilla)
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Michael Durham / Pacific Chorus Frog (Pseudacris regilla) jumping into pond, Oregon
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David Tipling / RF - Southern elephant seal (Mirounga leonina) adolescent males sparring. King Edward Point, South Georgia. January. (This image may be licensed either as rights managed or royalty free.)
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David Tipling / RF - Southern elephant seal (Mirounga leonina) adolescent males sparring. King Edward Point, South Georgia. January. (This image may be licensed either as rights managed or royalty free.)
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Cyril Ruoso / Pacific tree frog (Pseudacris regilla) male calling with vocal sac inflated, Conboy Lake National Wildlife Refuge, Washington, USA. March.
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Cyril Ruoso / Pacific tree frog (Pseudacris regilla) male calling with vocal sac inflated, Conboy Lake National Wildlife Refuge, Washington, USA. March.
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Cyril Ruoso / Pacific tree frog (Pseudacris regilla) male calling with vocal sac inflated, Conboy Lake National Wildlife Refuge, Washington, USA. March.
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Cyril Ruoso / Pacific tree frog (Pseudacris regilla) male calling with vocal sac inflated, Conboy Lake National Wildlife Refuge, Washington, USA. March.
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Cyril Ruoso / Pacific tree frog (Pseudacris regilla) next to reeds at twilight, Conboy Lake National Wildlife Refuge, Washington, USA. March.
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Graham Eaton / Herring Gulls (Larus argentatus) calling on sea cliff. Cardigan Bay, Wales. July.
