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

Marie Read / Canada geese (Branta canadensis) two during territorial fight in early spring, Ithaca. New York, USA

Steve Downer / Close up of a Canada goose gosling (Branta canadensis) sleeping, with other goslings in the background, Birmingham, England, UK, June.

John & Mary-Lou Aitchison / Flock of Barnacle geese (Branta leucopsis) flying over the sea, Islay, Inner Hebrides, Scotland, UK, November.

Pal Hermansen / Barnacle geese (Branta leucopsis) with goslings, swimming past icebergs, Jokulsarlon, Iceland, June.

Pal Hermansen / Barnacle geese (Branta leucopsis) with goslings, Jokulsarlon ice field, Iceland, June.

Gerrit Vyn / Nene / Hawaiian goose (Branta sandvicensis) Hawaii. April. Vulnerable species.

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

Pal Hermansen / Barnacle geese (Branta leucopsis) with goslings, Jokulsarlon ice field, Iceland, June.

Marie Read / Canada goose (Branta canadensis) adult swimming leading five goslings, Ithaca, New York, USA.

David Tipling / 2020VISION / Barnacle geese (Branta leucopsis) in flight, Solway Firth, Dumfries and Galloway, Scotland, UK, December

David Tipling / 2020VISION / Barnacle geese (Branta leucopsis) taking-off from grazing field, Solway Firth, Dumfries and Galloway, Scotland, UK, December

David Pattyn / Canada goose (Branta canadensis) group of adults with young chicks. The Netherlands. June 2014

David Pattyn / Canada goose swimming portrait (Branta canadensis) The Netherlands. March 2013.

Markus Varesvuo / Barnacle goose (Branta leucopsis) in flight, Helsinki Finland

Markus Varesvuo / Four Barnacle Geese flying (Branta leucopsis) Finland

Markus Varesvuo / Flock of Barnacle Geese flying over water (Branta leucopsis) Finland

Laurent Geslin / Canada goose (Branta canadensis) grazing at Walthamstow reservoir, London, UK

Laurent Geslin / Two Canada geese (Branta canadensis) amongst grass and flowers. Walthamstow reservoir, London, UK

Laurent Geslin / Canada goose (Branta canadensis) with two chicks / goslings in tall grasses, Walthamstow reservoir, London, UK

Donald M. Jones / Canada Goose (Branta canadensis) flying, central Montana

Donald M. Jones / Canada Goose (Branta canadensis) group flying, central Montana

Donald M. Jones / Canada Goose (Branta canadensis) flying, central Montana

Donald M. Jones / Canada Goose (Branta canadensis) flock flying, central Montana

Konrad Wothe / Barnacle Goose (Branta leucopsis) carrying goslings, Bavaria, Germany

Philippe Clement / Canada goose (Branta canadensis) swimming with goslings in lake, Belgium, May

Matthew Maran / Canada goose (Branta canadensis) gosling portrait, Hornsey, London, UK May

Terry Whittaker / 2020VISION / Canada geese (Branta canadensis) grazing in snow, Reddish Vale, Manchester, England, UK, March. Did you know? Canada geese can fly up to 1500 miles in just 24 hours if the wind is favourable.

Terry Whittaker / 2020VISION / Dark-bellied brent geese (Branta bernicla) taking flight from grazing field, Wallasea Island, Essex, England, UK, February.

Terry Whittaker / 2020VISION / Flock of Dark-bellied brent geese (Branta bernicla) flying over sea wall, South Swale, Kent, England, UK

Danny Green / 2020VISION / Barnacle Geese (Branta leucopsis) in flight at sunset, Caerlaverock WWT, Scotland, Solway, UK, January.

Markus Varesvuo / Barnacle goose (Branta leucopsis) flock in field, Helsinki, Finland, October

Roy Mangersnes / Two Barnacle geese (Branta leucopsis) in flight, Spitsebergen, Svalbard, Norway, August

David Tipling / 2020VISION / Flock of Barnacle geese (Branta leucopsis) feeding on grazing marshes, Caerlaverock WWT, Dumfries and Galloway, Scotland, UK, December

David Tipling / 2020VISION / Large flock of Barnacle geese (Branta leucopsis) taking off from grazing marshes, Caerlaverock WWT, Dumfries and Galloway, Scotland, UK, December

David Tipling / 2020VISION / Barnacle geese (Branta leucopsis) feeding on grazing marshes, with one bird wing stretching, Caerlaverock WWT, Dumfries and Galloway, Scotland, UK, December

Chris Gomersall / 2020VISION / Flock of dark-bellied brent geese (Branta bernicla) on foreshore, Snettisham RSPB reserve, The Wash, Norfolk, England, UK, January 2012

Chris Gomersall / 2020VISION / Dark-bellied brent goose (Branta bernicla) feeding on shore just after high water, The Wash, Norfolk, England, UK, January 2012

Terry Whittaker / 2020VISION / Flock of Pale-bellied brent geese (Branta bernicla) flying over town of Burnham-on-Crouch, Wallasea Wild Coast Project, RSPB Greater Thames Futurescapes Project, Wallasea Island, Essex, England, UK, N...

Terry Whittaker / 2020VISION / Mixed flock of Dark-bellied brent geese (Branta bernicla) and other waterfowl on mudflats at dawn with town in background, Leigh-on-Sea, Essex, UK, October 2010

Terry Whittaker / 2020VISION / Mixed flock of Dark-bellied brent geese (Branta bernicla bernicla) and Black-tailed godwit (Limnosa limosa) South Swale Nature Reserve, Kent, UK, with Whitstable in background, October 2010

Terry Whittaker / 2020VISION / Flock of Dark-bellied brent geese (Branta bernicla bernicla) feeding on crops at dusk, South Swale, Kent, UK, December

Terry Whittaker / 2020VISION / Flock of Dark-bellied brent geese (Branta bernicla bernicla) feeding on crops, South Swale, Kent, UK, December

Mark Carwardine / Hawaiian goose / Nene (Branta sandvicensis) looking down, Slimbridge, Gloucestershire, UK, Captive, native to Hawaii, USA, Vulnerable species, September

Andrew Parkinson / Barnacle geese (Branta leucopsis) flock flying in dense winter fog. Dumfries and Galloway, Scotland, UK, January (non-ex)

Donald M. Jones / Canada Goose (Branta canadensis) flying in formation, central Montana

Donald M. Jones / Canada Goose (Branta canadensis) flying, central Montana

Donald M. Jones / Canada Goose (Branta canadensis) flying, central Montana

Donald M. Jones / Canada Goose (Branta canadensis) resting during sub-zero weather on Missouri River, central Montana

LYNN M. STONE / Hawaiian Goose / Nene (Branta sandvicensis) head portrait, captive.

John Downer / Barnacle geese {Branta leucopsis} in flight, imprinted geese trained to fly beside car, captive, UK

Gerrit Vyn / Small flock of adult Canada Geese (Branta canadensis) in flight. Tompkins County, New York, USA, March.

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

Gerrit Vyn / Canada Goose (Branta canadensis) brooding a recently hatched chick at the nest. Tompkins County, New York, USA

Wild Wonders of Europe / Liodden / Barnacle goose (Branta leucopsis) in snow, Spitsbergen, Svalbard, Norway, June 2009. WWE INDOOR EXHIBITION

Wild Wonders of Europe / Novák / Brent geese (Branta bernicla) in flight, Hallig Hooge, Germany, April 2009. BOOK & WWE OUTDOOR EXHIBITION.

Wild Wonders of Europe / Geslin / Urban Red fox (Vulpes vulpes) sitting watching Canada geese (Branta canadensis) London, June 2009

Andy Rouse / Barnacle geese (Branta leucopsis) taking off, Islay, Scotland

Wild Wonders of Europe / Peltomäki / Brent goose (Branta bernicla) standing in field with yellow flowers, Texel, Netherlands, May 2009

Wild Wonders of Europe / Novák / Brent geese (Branta bernicla) flying, Hallig Hooge, Germany, April 2009

Wild Wonders of Europe / Unterthiner / Whooper swans (Cygnus cygnus) Canada geese (Branta canadensis) and Greylag geese (Anser anser) in heavy snow, Lake Tysslingen, Sweden, March 2009

Wild Wonders of Europe / Novák / Barnacle geese (Branta leucopsis) in flight, Westerhever, Germany, April 2009

Wild Wonders of Europe / Unterthiner / Whooper swans (Cygnus cygnus) Canada geese (Branta canadensis) and Greylag geese (Anser anser) in snow, Lake Tysslingen, Sweden, March 2009

Wild Wonders of Europe / Novák / Barnacle goose (Branta leucopsis) with grass in beak, Nabu center, Katinger Watt, Eiderstedt, Germany, April 2009

Wild Wonders of Europe / Novák / Barnacle geese (Branta leucopsis) in field, Westerhever, Germany, April 2009

Wild Wonders of Europe / Novák / Barnacle goose (Branta leucopsis) flock in flight at sunset, Westerhever, Germany, April 2009

Wild Wonders of Europe / Novák / Brent geese (Branta bernicla) in flight, Hallig Hooge, Germany, April 2009

Wild Wonders of Europe / Presti / Red breasted geese (Branta ruficollis) and White fronted geese (Anser albifrons) in flight at sunrise, Durankulak Lake, Bulgaria, February 2009

Wild Wonders of Europe / Presti / Red breasted geese (Branta ruficollis) and White fronted geese (Anser albifrons) in flight, Durankulak Lake, Bulgaria, February 2009. Wild Wonders kids book.

Wild Wonders of Europe / Presti / Red breasted geese (Branta ruficollis) and White fronted geese (Anser albifrons) in flight, Durankulak Lake, Bulgaria, February 2009

Wild Wonders of Europe / Presti / Red breasted geese (Branta ruficollis) on ground with some flying, Durankulak Lake, Bulgaria, February 2009

Alan Williams / Brent geese (Branta bernicla) flock flying over farmland, Whitstable, Kent, UK, January

Andrew Parkinson / Canada goose (Branta canadensis) pair move together across a tranquil lake, Derbyshire, UK

Andrew Parkinson / Canada goose (Branta canadensis) landing at sunset, Derbyshire, UK

Andrew Parkinson / Canada goose (Branta canadensis) landing at sunset, Derbyshire, UK

Andrew Parkinson / Canada goose (Branta canadensis) drying its wings after bathing, Derbyshire, UK

Donald M. Jones / Canada Goose (Branta canadensis) pair flying, central Montana

Donald M. Jones / Canada Goose (Branta canadensis) flock flying, central Montana

Rolf Nussbaumer / Canada goose {Branta canadensis} Wyoming, USA

Colin Varndell / Barnacle goose portrait {Branta leucopsis} England UK

TJ Rich / Day-old Canada gosling chick in nest {Branta canadensis} Wiltshire, UK

Michael Quinton / Canada Goose (Branta canadensis) hatchlings in nest with unhatched eggs, spring, Idaho

Michael Quinton / Mallard (Anas platyrhynchos) female with adopted Canada Goslings (Branta canadensis) in the spring, Idaho

John Downer / Barnacle geese in flight over water {Branta leucopsis} UK

John Cancalosi / Barnacle Geese {Branta leucopsis} standing on ice UK

George McCarthy / Canada geese family on water {Branta canadensis} Sussex UK

Nigel Bean / Canada goose portrait {Branta canadensis} Surrey, UK

David Kjaer / Canada geese in flight {Branta canadensis} UK

WILLIAM OSBORN / Canada goose sitting on eggs at nest {Branta canadensis} Wiltshire England UK

WILLIAM OSBORN / Canada goose swimming portrait {Branta canadensis} England UK

David Kjaer / Barnacle geese flying, England, UK {Branta leucopsis}

Bernard Castelein / Canada goose (Branta canadensis) goose reflected in drain canal, in mist at dawn. Groot Schietveld, Wuustwezel, Belgium. May 2010.

Tony Heald / Canada goose (Branta canadensis), two males fighting over territory, UK. April.

John Shaw / Canada Goose (Branta canadensis) in flight. Gilbert Water Ranch, Arizona, USA. January.