Dong Lei / Saker Falcon (Falco cherrug) stretching wings, Mangkang, Qinghai-Tibetan Plateau, China, June.

XI ZHINONG / Saker falcon (Falco cherrug) in flight close to the ground, Kekexili, Qinhai, China, December.

XI ZHINONG / Saker falcon (Falco cherrug) on snowy ground, Sanjiangyuan, Qinghai, China, Decemeber

XI ZHINONG / Saker falcon (Falco cherrug) in flight, Qinghai, Tibetan Plateau, China, December

Eric Dragesco / Saker Falcon (Falco cherrug) perched in top of tree, Altai Mountains, Mongolia

Dietmar Nill / Saker falcon (Falco cherrug) with bird prey on ground, wild bird, Slovakia

Dietmar Nill / Saker falcon (Falco cherrug) with bird prey on ground, wild bird, Slovakia

Dietmar Nill / Saker falcon (Falco cherrug) with bird prey on ground, wild bird, Slovakia

Dietmar Nill / Saker falcon (Falco cherrug) in flight, wild bird, Slovakia

Dietmar Nill / Saker falcon (Falco cherrug) in flight, wild bird, Slovakia

Dietmar Nill / Saker falcon (Falco cherrug) in flight, wild bird, Slovakia

Dietmar Nill / Saker falcon (Falco cherrug) in flight, wild bird, Slovakia