Paul Williams / Budgerigars (Melopsittacus undulatus) flocking to find water, Northern Territory, Australia

Denis-Huot / Lesser flamingo (Phoeniconaias minor) flock in the mist, Lake Nakuru, Kenya. March.

Lucas Bustamante / Scarlet macaws (Ara macao) and Red and green macaws (Ara chloroptera) at clay lick close to the Tambopata river. Tambopata Reserve, Madre de Dios, Peru.

Bence Mate / Great egrets (Ardea alba) in winter, and Grey heron (Ardea cinerea) with flock of other birds flying above, Lake Csaj, Kiskunsagi National Park, Hungary. January.

Bence Mate / Dalmatian pelicans (Pelecanus crispus) low angle perspective of open bills whilst feeding, Lake Kerkini, Greece, February. Highly commended in World of Birds category in the Cadiz Photo Nature Competi...

Espen Bergersen / Gulls (Laridae) seaching for food in water containing blood coming from a large fishing boat, Tromvik, Kvaloya, Troms, Norway, November 2014.

Wim van den Heever / Whooper swans (Cygnus cygnus) juvenile with adults behind, on frozen Lake Kussharo, Hokkaido, Japan. February.

Markus Varesvuo / Black grouse (Tetrao / Lyrurus tetrix) flock flying in snow, Suomussalmi, Finland, January.

Markus Varesvuo / Willow grouse (lagopus lagopus) flock in flight in snow, Utsjoki, Finland, October.

Gerrit Vyn / Red-winged blackbirds (Agelaius phoeniceus) in flight. Lower Klamath National Wildlife Refuge, Siskiyou County, California, USA. December.

Gerrit Vyn / American Flamingos (Phoenicopterus ruber) perform elaborate marchlike courtship displays, Celestun Biosphere Reserve, Yucutan, Mexico. February.

Claudio Contreras / Caribbean flamingo (Phoenicopterus ruber) adults guarding chick, Ria Lagartos Biosphere Reserve, Yucatan Peninsula Mexico, June. Bookplate.