Diane McAllister / Swainson's Hawk juvenile (Buteo swainsonii) stretching its wings while perched on a fence in rural Palomino Valley. Nevada, USA, August

Hanne & Jens Eriksen / Swainson's hawk (Buteo swainsoni) in flight. Saskatchewan, Canada, August.

Gabriel Rojo / Swainson's hawk (Buteo swainsoni) La Pampa, Argentina.

David Welling / Swainson's hawk {Buteo swainsonii} at water, Texas, USA

Shattil & Rozinski / Swainson's hawk {Buteo swainsonii} Colorado, USA

Tom Vezo / Swainson's hawk juvenile near nest {Buteo swainsonii} Arizona, USA Chiricahua mountains

Rolf Nussbaumer / Swainson's hawk {Buteo swainsonii} adult calling on fence post, Rocksprings, Wyoming, USA

TOM MANGELSEN / Swaison's hawk landing. (Buteo swainsonii) Wyoming, USA.

TOM MANGELSEN / Swaison's hawk soaring. (Buteo swainsonii) Wyoming, USA

Tom Vezo / Swainson's hawk {Buteo swainsonii} Arizona, USA, North America

Jack Dykinga / Swainson's hawks (Buteo swainsonii) fighting. A subadult in a territorial dispute with an adult hawk, knocking the larger hawk off his perch on an earthen berm, Marana, Arizona farming area, USA....

Karine Aigner / Swainson's hawk (Buteo swainsoni) juvenile, perched on post, Texas, USA. May.