Ernie Janes / Four Grey partridge (Perdix perdix) in snow, UK

Alan Williams / Male Grey Partridge (Perdix perdix) calling in uncultivated field on farmland. Cheshire, UK, May

Chris Gomersall / Grey partridge (Perdix perdix) pair in snow, Hertfordshire, UK, February

Chris Gomersall / Male Grey partridge (Perdix perdix) calling in snow, Hertfordshire, UK, February

Andy Rouse / Grey partridge (Perdix perdix) on ground, UK

Donald M. Jones / European Partridge (Perdix perdix) buried in snow, western Montana

Donald M. Jones / European Partridge (Perdix perdix) in snow, western Montana

Donald M. Jones / European Partridge (Perdix perdix) group, western Montana

Andy Sands / Grey Partridge (Perdix perdix) Portrait in meadow, Co Durham, UK, May

Dave Bevan / Grey partridge {Perdix perdix} pair at rest in wheatfield, Norfolk, UK

Kerstin Hinze / Grey Partridge ( Perdix perdix), male and female, Bulgaria

David Kjaer / Grey Partridge {Perdix perdix} profile on frosty grassland, Wiltshire, UK.