Oscar Dewhurst / Mute swan (Cygnus olor), two cygnets sheltering under parent's wing. Richmond Park, London, England, UK. April.

Marie Read / Red-winged Blackbird (Agelaius phoeniceus) male displaying in cattail marsh, Viera Wetlands, Brevard County, Florida, USA, January.

Marie Read / Eastern bluebird (Sialia sialis) male fluttering wings while perched on cherry (Prunus sp.) branch in spring, New York, USA, April.

Marie Read / Arctic terns (Sterna paradisaea), two in flight over nesting colony in field of buttercups (Ranunculus sp.), Keflavik, Iceland. Digital canvas expansion.

David Pattyn / Great white egret (Egretta Alba) preening its feathers, Valkenhorst Nature Reserve, Valkenswaard, The Netherlands, July

David Tipling / Wandering albatross (Diomedea exulans) Southern Ocean near South Georgia, November

Bence Mate / Great white egret (Ardea alba) group of three in winter, Kiskunsag National Park, Hungary. Winner of the Bird Category of Nature Photographer of the Year Awards 2018.

Peter Bassett / Wandering albatross (Diomedea exulans) chick stretching its wings, Prion Island, South Georgia.

Alex Hyde / Silk moth (Automeris zugana) sequence 1 of 2, photographed on a white background in mobile field studio, Cordillera de Talamanca mountain range, Caribbean Slopes, Costa Rica.

Alex Hyde / Silk moth (Automeris zugana) sequence 2 of 2, with wings open to reveal eyespots, a means of deterring predators, photographed on a white background in mobile field studio, Cordillera de Talamanca mou...

Wim van den Heever / White-fronted bee-eaters (Merops bullockoides) perched near to nesting holes Chobe National Park, Botswana.

Wim van den Heever / White tailed eagle (Haliaeetus albicilla) caught in a fight. Hokkaido Japan, March.