John Chan / Female Anna's hummingbird (Calypte anna) incubating eggs, departs from nest momentarily to feed, Southern California, USA, March.

John Chan / Elegant tern (Thalasseus elegans) with a broken wing, attempting to take off, Southern California, USA, April.

Brian Bevan / Slow motion clip of a male Kingfisher (Alcedo atthis) taking fish into nest hole before exiting backwards, Bedfordshire, England, UK, July.

Philippe Clement / Common raven (Corvus corax) taking off from the top of a sea cliff, Eshaness, Northmavine, Shetland Islands, Scotland, UK, May.

Dave Bevan / Slow motion clip of a pair of Common swifts (Apus apus) approaching and entering a nest hole in limestone cliff, Norfolk, England, UK, May.

Juergen Freund / Colony of Little red flying foxes (Pteropus scapulatus) leaving roost site, Atherton Tablelands, Queensland, Australia.

Staffan Widstrand / Wild Wonders of China / Crested ibis (Nipponia nippon) flying, Yangxian Nature Reserve, Shaanxi, China, September.

John Chan / Honey bee (Apis mellifera) gathering pollen from a Sea fig (Carpobrotus chilensis), Southern California, USA, April.

Dave Bevan / Slow motion clip of a Tawny owl (Strix aluco) leaving nest site in hollow tree, Carmarthenshire, Wales, UK, April.

John Waters / Wide-angle shot of wetland landscape at sunset, with Lapwings (Vanellus vanellus) flying to roost, Ham Wall RSPB Reserve, Somerset Levels, England, UK, February.

Michael Hutchinson / Slow motion clip of a Common carder bumblebee (Bombus pascuorum) feeding from a Viper's bugloss (Echium vulgare) flower, Bristol, England, UK, September.

Eric Medard / Female kestrel (Falco tunniculus) taking lizard prey gift from male, Mayenne, France