Robert Valentic / Eastern tiger snake (Notechis scutatus) female, Yarra River corridor in suburban Melbourne, Victoria, Australia, in mid-summer. She is in a defensive pre-strike position with hood expanded, accompanie...
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Ernie Janes / RF- Lesser black-backed gulls (Larus fuscus) calling from shoreline, beaks open, England, UK, May. (This image may be licensed either as rights managed or royalty free.)
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Mark Bowler / Black spider monkey (Ateles chamek) calling, captive, Peru.
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Sven Zacek / Ravens (Corvus corax) fighting in bog during snowfall, Tartumaa, Estonia. December.
Cyril Ruoso / Red deer (Cervus elaphus) male calling during rut, Denmark. Non-ex
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Loic Poidevin / wo juvenile Barn swallows (Hirundo rustica)peched on a twig and begging for food, Indre-et-Loire , France, June.
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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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Edwin Giesbers / RF- Whooper Swan (Cygnus cygnus) in profile, calling. The Netherlands. June. (This image may be licensed either as rights managed or royalty free.)
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Ingo Arndt / Iguazu Falls, Iguazu National Park, Brazil, January 2014.
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Mark Hamblin / RF - Siskin (Carduelis spinus) male displaying aggressively Scotland, UK. May. (This image may be licensed either as rights managed or royalty free.)
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LYNN M. STONE / RF - Royal tern (Thalasseus maximus) with fish, landing on beach. Mullet Key, St Petersburg. Florida, USA. (This image may be licensed either as rights managed or royalty free.)
