David Perpinan / Oystercatcher (Haematopus ostralegus) incubating eggs on nest, alarm calling as a predator flies overhead, Scotland,UK, June.

Philippe Clement / Canada goose (Branta canadensis) hiding by adopting a low posture, Belgium, April

Sean Viljoen / Slow motion clip of an African Fish eagle (Haliaeetus vocifer) attempting to catch a Goliath heron (Ardea goliath), Moremi Game Reserve, Botswana.

Cyril Ruoso / Common eider (Somateria mollissima) female ducking under sea surface, down is collected from wild ducks on Lanan Island, Vega Archipelago, Norway June

Steven David Miller / Wood duck (Aix sponsa) ducking held in hand, Australia

Steven David Miller / Wild Platypus {Ornithorhynchus anatinus} swimming on surface of water after ducking down to hunt for food, Eungella National Park, Queensland, Australia, April

Steven David Miller / Wild Platypus {Ornithorhynchus anatinus} swimming on surface of water after ducking down to hunt for food, Eungella National Park, Queensland, Australia, April

Andy Sands / Jack snipe (Lymnocryptes minimus) feeding, displaying typical bobbing behaviour in old Watercress bed, Hertfordshire, UK. December.

Brian Bevan / Little owl (Athene noctua) entering frame and landing on branch as another Little Owl flies through frame and attacks it, in meadow, Bedfordshire, UK, June.

Brian Bevan / Peregrine falcon (Falco peregrinus) chicks looking out of nest entrance in window, with one bobbing its head to judge distance, Bedfordshire, UK.