Oriol Alamany / Himalayan snowcock (Tetraogallus himalayensis) in a mountain slope at 4,400 meters, Spiti Valley, Cold Desert Biosphere Reserve, Himalaya, Himachal Pradesh, India, March

Dong Lei / Tibetan snowcock (Tetraogallus tibetanus) Mount Qomolangma National Park, Dingjie County, Qinghai-Tibet Plateau, Tibet, China, Asia

Dong Lei / Tibetan snowcock (Tetraogallus tibetanus) Mount Qomolangma National Park, Dingjie County, Qinghai-Tibet Plateau, Tibet, China, Asia

Dong Lei / Tibetan snowcock (Tetraogallus tibetanus) Mount Qomolangma National Park, Dingjie County, Qinghai-Tibet Plateau, Tibet, China, Asia

Axel Gebauer / Steep rocky slopes, habitat of Caucasian snowcock (Tetraogallus caucasicus) Teberdinsky Zapovednik, Teberda, Russia, May 2012.

Satyendra Sharma / Himalayan Snowcock (Tetraogallus himalayensis) calling, Ladakh, India

Konstantin Mikhailov / Pellets of Caucasian Snowcock (Tetraogallus caucasicus) Teberdinsky Nature Preserve, Caucasian highlands, Western Caucasus, Russia, July 2006

Konstantin Mikhailov / Caucasian / Caspian snowcock (Tetraogallus caucasicus) in its native habitat, Teberdinsky Nature Preserve, Caucasian highlands, Western Caucasus, Russia, July

Konstantin Mikhailov / Caucasian Snowcock (Tetraogallus caucasicus) on snow in its native habitat. Teberdinsky Nature Preserve, Caucasian highlands, Western Caucasus, Russia, July 2006

Konstantin Mikhailov / Caucasian Snowcock (Tetraogallus caucasicus) amongst wildflowers in its native habitat. Teberdinsky Nature Preserve, Caucasian highlands, Western Caucasus, Russia, July 2006

Konstantin Mikhailov / Caucasian Snowcock (Tetraogallus caucasicus) on rock in its native habitat. Teberdinsky Nature Preserve, Caucasian highlands, Western Caucasus, Russia, July 2006

Gavin Maxwell / Himalayan snowcock (Tetraogallus tibetanus) with prayer flags and mountains in the background. Xiongse nunnery, Tibet, 2007