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

Alan Murphy/ BIA / Swainson's Hawk (Buteo swainsoni) flying, Texas

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

E.J. Peiker / Swainson's Hawk (Buteo swainsoni), Arizona

Todd Mintz / Swainson's hawk (Buteo swainsoni) spring arrival, Saskatchewan, Canada, March

Donald M. Jones / Swainson's Hawk (Buteo swainsoni) flying, central Wyoming

Donald M. Jones / Swainson's Hawk (Buteo swainsoni), central Wyoming

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.