David Pattyn / Alpine accentor (Prunella collaris) in snow, Leukerbad, Vallais, Wallis, Switzerland, January

Guy Edwardes / Alpine accentor (Prunella collaris) Poland, September

Dong Lei / Collared accentor (Prunella collaris) Wolong National Nature Reserve, Sichuan Province, China.

David Pattyn / Alpine accentor (Prunella collaris) in snow, Leukerbad, Valais, Switzerland, February

David Pattyn / Alpine accentor (Prunella collaris) in snow, Leukerbad, Valais, Switzerland, February.

Dong Lei / Collared accentor (Prunella collaris) on rock, Mount Namjagbarwa, Yarlung Zangbo Grand Canyon National Park, Tibet, China.

Pascal Pittorino / Alpine accentor (Prunella collaris) on rock, with the sea in the background, Corsica, France, February.

Radomir Jakubowski / Alpine Accentor (Prunella collaris) Bernese Alps, Switzerland, April.

Nick Upton / Alpine accentor (Prunus collaris) perched on a snow-covered hand-rail at an alpine chalet, with snow-covered mountain slopes and trees in the background, Hauteluce, Savoie, France, January.

Mateusz Piesiak / Alpine accentor (Prunella collaris) perched on snow-covered mountain top, Alps, Switzerland. January.

Andres M. Dominguez / Alpine accentor (Prunella collaris) perched on rock, Alps, Dalatal, Switzerland. February.

Andres M. Dominguez / Alpine accentor (Prunella collaris) perched on snow, Alps, Dalatal, Switzerland. February.

Andres M. Dominguez / Alpine accentor (Prunella collaris) walking on snow, Alps, Dalatal, Switzerland. February.

Staffan Widstrand / Wild Wonders of China / Alpine accentor (Prunella collaris), Hehuanshan, Taroko National Park, Taiwan