Ernie Janes / Brent geese (Branta bernicla) flying with moon, Titchwell, Norfolk, UK, December

Roger Powell / Small flock of Brent Geese (Branta bernicla) in flight..Texel Island, The Netherlands, Europe

Gerrit Vyn / Aerial view of large flock of molting Brant. These geese have found refuge on a shallow lake. During their summer moult the geese are flightless. The Teshekpuk Lake area is the most important goose m...

Gerrit Vyn / Molting Brant (Branta bernicla) being held in an enclosure during a banding operation in the Teshekpuk Lake Special Area. During their moult they are unable to fly. Arctic Coastal Plain, Alaska, USA

Gerrit Vyn / Molting Brant (Branta bernicla) being held in an enclosure during a banding operation in the Teshekpuk Lake Special Area. During their moult they are unable to fly. Arctic Coastal Plain, Alaska, USA

Tony Heald / Whistling rats at entrance to burrow {Parotomys brantsii} Kgaladi TP, South Africa

Ernie Janes / Brent geese (Branta bernicla) in swimming in creek, Norfolk, England, UK, March.

Loic Poidevin / Brant goose (Branta bernicla) Vendee, France, January.

Glenn Bartley/ BIA / Brant (Branta bernicla), British Columbia, Canada

Glenn Bartley/ BIA / Brant (Branta bernicla) landing on water, British Columbia, Canada

Claudio Contreras / Brent Goose (Branta bernicla) flock taking off, Guerrero Negro, El Vizcaino Biosphere Reserve, Baja California, Mexico, March

Claudio Contreras / Brent Goose (Branta bernicla) swimming, Guerrero Negro, El Vizcaino Biosphere Reserve, Baja California, Mexico, March