Alan Williams / Pink footed geese (Anser brachyrhynchus) pair in flight, Lancashire, UK, October

Alan Williams / Pink footed geese (Anser brachyrhynchus) flock decending fast to land, described as 'whiffling', Lancashire, UK, October

Alan Williams / Pink footed geese (Anser brachyrhynchus) flock gliding in to land with feet out to slow them down, Lancashire, UK, February

Alan Williams / Pink footed geese (Anser brachyrhynchus) flock feeding in field, Lancashire, UK, February

Alan Williams / Pink footed geese (Anser brachyrhynchus) flock gliding in to land, Lancashire, UK, February

Alan Williams / Pink footed geese (Anser brachyrhynchus) in flight, Lancashire, UK, October

Alan Williams / Close up of feet of Pink footed goose (Anser brachyrhynchus) Lancashire, UK, February

Alan Williams / Pink footed geese (Anser brachyrhynchus) flock gliding in to land with feet out to slow them down, Lancashire, UK, October

Alan Williams / Close up of feet of Pink footed goose (Anser brachyrhynchus) Lancashire, UK, February

Alan Williams / Pink footed geese (Anser brachyrhynchus) flock gliding in to land, Lancashire, UK, October

Alan Williams / Pink footed goose (Anser brachyrhynchus) gliding in to land, Lancashire, UK, February

Alan Williams / Pink footed geese (Anser brachyrhynchus) pair in flight, Lancashire, UK, October

Alan Williams / Pink footed goose (Anser brachyrhynchus) gliding in to land, Lancashire, UK, February

Alan Williams / Pink footed geese (Anser brachyrhynchus) pair gliding in to land, Lancashire, UK, October

Alan Williams / Pink-footed geese (Anser brachyrhynchus) flock grazing in field, Lancashire, UK, February

Alan Williams / Pink footed goose (Anser brachyrhynchus) in flight, Lancashire, UK, October

Alan Williams / Pink footed geese (Anser brachyrhynchus) flock landing in field, Lancashire, UK, February

Alan Williams / Pink footed geese (Anser brachyrhynchus) flock taking flight from Martin Mere WWT reserve, Lancashire, UK, October

Alan Williams / Pink footed geese (Anser brachyrhynchus) two pairs on marsh, Lancashire, UK, October

Alan Williams / Pink footed goose (Anser brachyrhynchus) with feet out, coming in to land, Lancashire, UK, February

Alan Williams / Pink footed geese (Anser brachyrhynchus) flock feeding on farmland, Lancashire, UK, February

Alan Williams / Close up of feet of Pink footed goose (Anser brachyrhynchus) Lancashire, UK, February

Russell Cooper / Flock of Pink footed geese {Anser brachyrhynchus} near industrial compound with electricity pylons, UK

Silvia Reiche / Map Butterfly (Araschnia levana) on pink flower, Hoogeloon, Noord-Brabant, Netherlands

Silvia Reiche / Map Butterfly (Araschnia levana) on pink flower, Hoogeloon, Noord-Brabant, Netherlands

Silvia Reiche / Map Butterfly (Araschnia levana) on pink flower, Hoogeloon, Noord-Brabant, Netherlands

Gary K. Smith / Sugar beet (Beta vulgaris) being harvested, with Pink footed geese (Anser brachyrhynchus) feeding in the distance, Norfolk, Uk, February.

Gary K. Smith / Sugar beet (Beta vulgaris) being harvested, with Pink footed geese (Anser fabalis brachyrhynchus) feeding in the distance, Norfolk, Uk, February.

Roger Powell / Large flock of Pink-footed geese (Anser brachyrhynchus) flying over on their way to their feeding grounds. Cresswell, Northumberland, UK

David Kjaer / Pink-footed goose (Anser brachyrhynchus) flock feeding on field, Norfolk, England

Roger Powell / Flock of Pink-Footed Geese {Anser fabalis brachyrhynchus} flying over Bamburgh Castle at dawn, Northumberland, UK

Martin H Smith / Silhouette of Pink footed geese {Anser fabalis brachyrhynchus} flying across sky at sunset, Norfolk, UK

Chris Gomersall / Pink-footed geese (Anser brachyrhynchus) flock feeding in sugar beet field. Norfolk, England. November.

Piotr Naskrecki / Orion (Historis orion) butterfly, chrysalis, Costa Rica

Piotr Naskrecki / Fig Eater Butterfly (Euphaedra xypete) on leaf, side view, Guinea, West Africa

Martin H Smith / Pink footed geese (Anser brachyrhynchus) taking off from sugar beet field, Norfolk, UK

Mike Potts / Pink footed goose {Anser brachyrhynchus} feeding on sugarbeet tops, nr. Burnham Market, Norfolk, UK.

Mike Potts / Pink footed goose {Anser brachyrhynchus} nr. Burnham Market, Norfolk, UK.

Mike Potts / Pink footed geese {Anser brachyrhynchus} Flock, Martin Mere WWT, Lancashire, UK. Recently arrived from Iceland, early Autumn

Mike Potts / Pink footed geese {Anser brachyrhynchus} Flock, Martin Mere WWT, Lancashire, UK. Recently arrived from Iceland, early Autumn

Adrian Davies / Pink footed goose (Anser brachyrhynchus) on water, UK

Chris Gomersall / Flock of pink-footed geese (Anser brachyrhynchus) in flight, Hickling Broad, Norfolk, UK

Geoff Simpson / Pink footed goose nesting {Anser brachyrhynchus} Lancashire, England.

Brian Lightfoot / Pink footed goose {Anser brachyrhynchus} Scotland.

Terry Andrewartha / Dawn landscape with Pink footed geese {Anser arvensis} Norfolk, England

Brian Lightfoot / Pink footed Goose {Anser brachyrhynchus} Scotland

Geoff Simpson / Pink footed goose {Anser brachyrhynchus}. Martin Mere WWT, England.

Geoff Simpson / Pink footed goose close up {Anser brachyrhynchus} Lancashire, England.

Steve Knell / Pink footed geese at dawn {Anser brachyrhynchus} winter, Marshside RSPB reserve, UK

Paul Hobson / Pink footed geese in flight at sunset. Norfolk, England. {Anser brachyrhynchus}

Flip de Nooyer / Pink-footed Goose (Anser brachyrhynchus) parent and chick, Europe

Flip de Nooyer / Pink-footed Goose (Anser brachyrhynchus) two adults resting with a chick, Europe

Michael & Patricia Fogden / Peacock Butterfly (Inachis io) on buddleia flowers in garden, England

Geoff Simpson / Pink footed goose portrait {Anser brachyrhynchus} Martin Mere, Lancashire, UK

Terry Andrewartha / Pink footed goose aggressive display {Anser brachyrhynchus} UK

Terry Andrewartha / Flock of Pink footed geese flying at sunset {Anser brachyrhynchus} UK

Terry Andrewartha / Flock of Pink footed geese flying {Anser brachyrhynchus} UK

Terry Andrewartha / Pink footed geese feeding in sugar beet field + aggression {Anser brachyrhynchus}

Terry Andrewartha / Pink footed goose displaying in sugar beet field {Anser brachyrhynchus} UK

Terry Andrewartha / Flock of Pink footed geese flying at sunset {Anser brachyrhynchus} UK

Terry Andrewartha / Pink footed goose displaying in sugar beet field {Anser brachyrhynchus} UK

Terry Andrewartha / Three Pink footed geese flying {Anser brachyrhynchus} UK

Terry Andrewartha / Pink footed goose displaying in sugar beet field {Anser brachyrhynchus} UK

Terry Andrewartha / Pink footed goose aggressive display {Anser brachyrhynchus} UK

Terry Andrewartha / Pink footed geese feeding in sugar beet field + display {Anser brachyrhynchus}

Terry Andrewartha / Pink footed geese drinking {Anser brachyrhynchus}

Terry Andrewartha / Pink footed goose feeding in sugar beet field in winter {Anser brachyrhynchus}

Terry Andrewartha / Two Pink footed geese aggressive display {Anser brachyrhynchus} UK

Terry Andrewartha / Pink footed geese feeding in sugar beet field in winter {Anser brachyrhynchus}

Terry Andrewartha / Pink footed geese feeding in sugar beet field in winter {Anser brachyrhynchus}

Terry Andrewartha / Flock of Pink footed geese flying at sunset {Anser brachyrhynchus} UK

Terry Andrewartha / Flock of Pink footed geese flying at sunset {Anser brachyrhynchus} UK

Terry Andrewartha / Flock of Pink footed geese flying in formation {Anser brachyrhynchus} UK

Chris Gomersall / Pink footed geese in flight at sunset {Anser brachyrhynchus} Norfolk, UK

Niall Benvie / Hunter with dead Pink footed geese. Montrose Basin LNR, Angus, Scotland, UK. 2002

Paul Johnson / Pink Footed Geese (Anser brachyrhynchus) on sugerbeet Norfolk landscape. England.

Terry Andrewartha / Pink footed geese {Anser brachyrhynchus} flying at sunrise. UK

Paul Hobson / Pink footed geese fly in V-formation, Norfolk, UK

Pete Oxford / Painted Beauty (Batesia hypochlora) butterfly, Yasuni National Park, Amazon, Ecuador

James Christensen / Pink-tipped Clearwing Satyr (Cithaerias pireta) butterflies feeding on dead caterpillar, Mindo, western slope of Andes, Ecuador