Nick Garbutt / King penguin (Aptenodytes patagonicus), two sleeping on snow. Grytviken, South Georgia. March.

Staffan Widstrand / African Spoonbill (Platalea alba) preening, Zimanga Private Nature Reserve, KwaZulu Natal, South Africa

John Cancalosi / Great horned owl (Bubo virginianus) chick stretching its wings in nest in a Saguaro (Carnegiea gigantea), is groomed by its parent, Sonoran Desert, Arizona, USA, May.

Marie Read / Roseate spoonbill (Ajaia ajaja) adult in breeding plumage preening tail feathers, Black Point Wildlife Drive, Merritt Island National Wildlife Refuge, Florida, USA, January.

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

John Chan / Male Anna's hummingbird (Calypte anna) cleaning its beak on a twig, Southern California, USA, January.

Karine Aigner / Cuban parakeets (Psittacara euops) preening each other, Bermejas, Cuba. Endemic.

Karine Aigner / Cuban Parakeet (Psittacara euops) preening each other, Cuba. Endemic.

Karine Aigner / Cuban parakeet (Psittacara euops) preening, Bermejas, Cuba. Endemic.

Alex Hyde / King penguins (Aptenodytes patagonicus). Grytviken, South Georgia. November.

Philippe Clement / Northern gannets (Morus bassanus) preening, sitting on nests made with plastic, Hermaness NNR, Unst, Shetland Islands, Scotland, UK, May.

Claudio Contreras / Caribbean Flamingo (Phoenicopterus ruber) preening chick in the breeding colony, Ria Lagartos Biosphere Reserve, Yucatan Peninsula, Mexico, June Finalist in the Portfolio Category of the Terre Sauvage...