Andy Rouse / Great crested grebe (Podiceps cristatus cristatus) courtship dance Cardiff, UK, March.
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Krijn Trimbos / Great crested grebe (Podiceps cristatus) pair in courtship display, The Netherlands. March.
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Espen Bergersen / Common raven (Corvus corax) pair in courtship display, flying upsidedown and calling, Hornoya bird cliff, Norway. March.
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Danny Green / Whooper swans (Cygnus cygnus) two in flight, during snowfall, Lake Kussharo, Japan, February
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Martin Gabriel / Mute swans (Cygnus olor) on water, Bavaria, Germany, February.
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Tui De Roy / Adelie penguin (Pygoscelis adeliae) courtship behaviour. Prydz Bay, near Davis Station, Vestfold Hills, Ingrid Christensen Coast, East Antarctica, November.
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Chris & Monique Fallows / Wandering albatross (Diomedea exulans), engaged in mating display. South Georgia Island, Southern Ocean.
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Nick Garbutt / Male Southern Lapwings (Vanellus chilensis) displaying in grasslands, Chapada dos Guimaraes, Brazil, South America.
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Ernie Janes,Ernie Janes / Newly hatched ducklings with eggs.
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Inaki Relanzon / Young buddhist monk studying in a monastery, Taungoo, Central Myanmar (Burma). September 2009
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Mark Bowler,Mark Bowler / Red eyed tree frog (Agalychnis callidryas) walking, digital composite Captive
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Tui De Roy / Red-footed booby (Sula sula), pair looking in same direction. Genovesa Island, Galapagos.