Ashley Cooper / Common snipe (Gallinago gallinago) feeding using its long bill to probe the shallow water and mud, RSPB Leighton Moss, Lancashire, UK.
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Ashley Cooper / Small Common starling (Sturnus vulgaris) murmuration before birds begin to roost in reeds below, Spurn, Yorkshire, UK.
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Bruce Thomson / Scaly-breasted lorikeet (Trichoglossus chlorolepidotus) pair allopreening in a branch of a tree, Toowoomba, Queensland, Australia.
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Doug Gimesy / Grey-headed flying-fox (Pteropus poliocephalus) cleaning its wing after rain, Yarra Bend, Kew, Victoria, Australia, November.
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Doug Gimesy / Domestic pigeons (Columba livia) sitting on a roof preening while one bird spins on a whirlybird air vent as it rotates, Australia.
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Lewis Jefferies / Common octopus (Octopus vulgaris) changing colour as a threat display, Maldives, Indian Ocean.
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Joel Sartore / Photo Ark / Screaming hairy armadillo (Chaetophractus vellerosus) sniffing while looking at camera before approaching it, Parque de Las Leyendas in Lima, Peru. Captive.
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David Weiller / Atta leaf-cutter ants (Genus atta) harvesting leaves and pink flower petals, Ecuador, February.
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David Weiller / Close up shot of Monkey slug (Phobetron hipparchia) caterpillar moving slowly along a stick, Amazon rainforest, Puyo, Ecuador.
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David Weiller / Portrait shot of Spiny devil katydid (Panacanthus cuspidatus) cleaning mandibles, Amazon rainforest, Puyo, Ecuador, December.
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Edwin Giesbers / Grey Wolf (Canis lupus), snarling protectively over carcass, Biotoppark Anholt, Germany, May. Captive.
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Stefan Christmann / Emperor penguin (Aptenodytes forsteri) breeding colony, males huddling on sea ice during polar night, incubating eggs, Atka Bay, Antarctica, July.