Dave Bevan / Slow motion clip of a Blue tit (Cyanistes caeruleus) flying to nest box, enters to feed nestlings and leaves, Carmarthenshire, Wales, UK, June.

Peter Bassett / King penguins (Aptenodytes patagonicus) entering and leaving the sea near their breeding colony, Salisbury Plain, South Georgia.

Nick Upton / European wasps (Vespula germanica) entering and leaving an underground nest, with one removing an injured grub, Wiltshire, England, UK, July.

Nick Upton / European wasps (Vespula germanica) entering and leaving an underground nest, with some removing balls of soil, Wiltshire, England, UK, July.

Nick Upton / European wasps (Vespula germanica) entering and leaving an underground nest, with some removing balls of soil, Wiltshire, England, UK, July.

Nick Upton / European wasps (Vespula germanica) entering and leaving an underground nest, Wiltshire, England, UK, July.

Nick Upton / European wasps (Vespula germanica) entering and leaving an underground nest, with some removing balls of soil, Wiltshire, England, UK, July.

Frederique Olivier / Hippopotamus (Hippopotamus amphibius) walking out of frame, with a mixed flock of White storks (Ciconia ciconia), Cattle egrets (Bubulcus ibis) and Great white pelicans (Pelecanus onocrotalus) in the...

Manuel Gracia / Black stork (Ciconia nigra) picks up dead fish from drying lagoon and begins to swallow it as Little egrets (Egretta garzetta) fly in and out of frame in the foreground, at dusk, near Donana National...

Dave Watts / Hoopoe (Upupa epops) male arrives with food then exits frame before female lands on perch and exits, July.

Dave Watts / Hoopoe (Upupa epops) male arrives with food on perch then exits frame, July.

Joel Sartore / Photo Ark / Comet longfin (Calloplesiops altivelis) swimming through the frame, The Fish Store, Nebraska, Lincoln, USA.