Andy Sands / Grey partridge (Perdix perdix) three birds on snow covered mound, Bedfordshire, England, UK, December

Markus Varesvuo / Four Grey partridges (Perdix perdix) on snow, Kauhajoki, Finland, January.

Markus Varesvuo / Grey Partridge (Perdix perdix) one buried in deep snow, Liminka, Finland, October

Markus Varesvuo / Grey Partridge (Grey Partridge) buried in thick snow, Liminka, Finland, February 2004

Dong Lei / Snow partridge (Lerwa lerwa) standing on rock. Jiudingshan Nature Reserve, Mao Country, Sichuan Province, China. November.

Dong Lei / Snow partridge (Lerwa lerwa) flock feeding in snow. Jiudingshan Nature Reserve, Mao Country, Sichuan Province, China. November.

Dong Lei / Snow partridge (Lerwa lerwa) flock flying past snowy rockface, in evening light. Jiudingshan Nature Reserve, Mao Country, Sichuan Province, China. November.

Dong Lei / Snow partridge (Lerwa lerwa) group sitting. Jiudingshan Nature Reserve, Mao Country, Sichuan Province, China. November.

Andy Sands / Red-legged partridge (Alectoris rufa) running during snow shower, Hertfordshire, England, UK, February

Andy Sands / Red-legged partridge (Alectoris rufa) In snow, Hertfordshire, England, UK, December

Andy Sands / Red-legged partridge (Alectoris rufa) In snow, Hertfordshire, England, UK, December

Andy Sands / Grey partridge (Perdix perdix) group of 6 birds on snow covered arable field, Bedfordshire, England, UK, December