Shattil & Rozinski / Ferruginous hawks {Buteo regalis} fighting over Prairie dog kill, Colorado, USA

Kim Taylor / Ferruginous hawk (Buteo regalis) landing. Captive

Jim Brandenburg / Ferruginous Hawk (Buteo regalis) and chicks on prairie nest, South Dakota

Gerrit Vyn / Ferruginous Hawk (Buteo regalis) nest with chicks. Sublette County, Wyoming. June.

Gerrit Vyn / Ferruginous Hawk (Buteo regalis) nest with chicks. Sublette County, Wyoming. USA June.

Gerrit Vyn / Ferruginous Hawk (Buteo regalis) nest with chicks. Sublette County, Wyoming, USA. June.

Gerrit Vyn / Ferruginous Hawk (Buteo regalis) nest with chicks. Sublette County, Wyoming, USA. June.

Gerrit Vyn / Ferruginous Hawk (Buteo regalis) nest with chick. Sublette County, Wyoming, USA. June.

Gerrit Vyn / Ferruginous hawk (Buteo regalis) feeding its young chick at the nest. Sublette County, Wyoming, USA. June.

Gerrit Vyn / Ferruginous hawk (Buteo regalis) in soaring flight. Sublette County, Wyoming, USA. June.

Gerrit Vyn / Ferruginous hawk (Buteo regalis) nest made of sage branches on a bluff. Sublette County, Wyoming, USA. May.

Nick Saunders / Ferruginous Hawk (Buteo regalis), Saskatchewan, Canada

E.J. Peiker / Ferruginous Hawk (Buteo regalis), Arizona

Donald M. Jones / Ferruginous Hawk (Buteo regalis) female with chicks at cliff nest, eastern Montana

Donald M. Jones / Ferruginous Hawk (Buteo regalis) female at nest with chicks, eastern Montana

Shattil & Rozinski / Ferruginous hawks {Buteo regalis} fighting over Prairie dog prey, Colorado, USA

Shattil & Rozinski / Ferruginous hawk {Buteo regalis} mantling Prairie dog prey, Colorado, USA

Shattil & Rozinski / Ferruginous hawk {Buteo regalis} feeding on Prairie dog prey in snow, Colorado, USA

Tim Fitzharris / Ferruginous Hawk (Buteo regalis) parent with four chicks at nest, North America

Tim Fitzharris / Ferruginous Hawk (Buteo regalis) parent with four chicks at nest, North America

ZSSD / Ferruginous Hawk (Buteo regalis) adult

Chris O'Reilly / Ferruginous hawk / buzzard {Buteo regalis} Male, captive, UK

Shattil & Rozinski / Ferruginous hawks fighting {Buteo regalis} Colorado, USA

Shattil & Rozinski / Ferruginous hawk {Buteo regalis} Colorado, USA

Shattil & Rozinski / Ferruginous hawk {Buteo regalis} mantling prey, protecting it from marauding Black billed magpie, Colorado, USA

Shattil & Rozinski / Ferruginous hawk {Buteo regalis} flying, about to land, Colorado, USA

Shattil & Rozinski / Ferruginous hawk {Buteo regalis} landing on Prairie dog burrow, Colorado, USA

Shattil & Rozinski / Ferruginous hawk {Buteo regalis} landing on Prairie dog burrow, Colorado, USA

Kim Taylor / Ferruginous hawk (Buteo regalis) taking off. Captive

Tom Vezo / Ferruginous Hawk (Buteo regalis) flying, Janos, Mexico

Tom Vezo / Ferruginous Hawk (Buteo regalis) juvenile light morph flying, Sulphur Springs Valley, Arizona

David Welling / Ferruginous hawk in snow {Buteo regalis} USA, North America

Rick Bowers/ BIA / Ferruginous Hawk (Buteo regalis), Arizona

Tom Vezo / Ferruginous Hawk (Buteo regalis) on ground, Sulphur Springs Valley, Arizona

Tom Vezo / Ferruginous hawk flying {Buteo regalis} Arizona USA sulphur springs valley

Tom Vezo / Ferruginous hawk {Buteo regalis} Arizona USA sulphur springs valley

Charlie Summers / Ferruginous hawk (Buteo regalis) flying over a prairie dog colony as it scans the countryside. Rocky Mountain Arsenal, Colorado, USA. February.

Charlie Summers / Ferruginous hawk (Buteo regalis) in flight over snow covered prairie. Rocky Mountain Arsenal National Wildlife Refuge, Colorado, USA. December.