Floris van Breugel / Burrowing Owl (Athene cunicularia) standing at entrance to burrow, and watching a Red-tailed Hawk circling above. Salton Sea, California, USA.

Philip Dalton / Red tailed hawk {Buteo jamaicensis} flying amongst and predating on Mexican free-tailed bats (Tadarida brasiliensis) flying from / to Bracken Cave and Echert James Bat Caves, Texas, USA

Philip Dalton / Red tailed hawk {Buteo jamaicensis} flying amongst and predating on Mexican free-tailed bats (Tadarida brasiliensis) flying from / to Bracken Cave and Echert James Bat Caves, Texas, USA

Alan Murphy/ BIA / Red-tailed Hawk (Buteo jamaicensis) flying, Texas

Donald M. Jones / Red-tailed Hawk (Buteo jamaicensis), western Montana

Matthew Studebaker / Red-tailed Hawk (Buteo jamaicensis) catching rodent prey in snow, Ohio

Tom Vezo / Red-tailed Hawk (Buteo jamaicensis) adult rufous morph flying, Sulphur Springs Valley, Arizona

Charlie Summers / Harlan's hawk (Buteo jamaicensis harlani) juvenile, perched on a branch above the Platte River, Denver, Colorado, USA. February.

Doug Gimesy / Red-tailed hawk (Buteo jamaicensis) perched on branches of tree during light snowfall. Yellowstone National Park, Wyoming, USA.? October.

John Chan / American Kestrel (Falco sparverius) mobbing a juvenile Red-tailed hawk (Buteo jamaicensis), Bolsa Chica Ecological Reserve, Southern California, USA, November.

John Chan / Juvenile Red-tailed hawk (Buteo jamaicensis) taking flight, Bolsa Chica Ecological Reserve, Southern California, USA.

John Chan / Red-tailed hawk (Buteo jamaicensis) feeding on a squirrel, Southern California, USA.

John Chan / Red-tailed hawk (Buteo jamaicensis) feeding on a squirrel, Southern California, USA.

John Chan / Red-tailed hawk (Buteo jamaicensis) feeding on a squirrel, Southern California, USA.

John Chan / Red-tailed hawk (Buteo jamaicensis) feeding on a squirrel, Southern California, USA.

John Chan / Red-tailed hawk (Buteo jamaicensis) feeding on a rabbit, Southern California, USA, June.

Claudio Contreras / Socorro Red-tailed Hawk (Buteo jamaicensis socorroensis), Socorro Island, Revillagigedo Archipelago Biosphere Reserve / Archipielago de Revillagigedo UNESCO Natural World Heritage Site (Socorro Island...

Claudio Contreras / Socorro Red-tailed Hawk (Buteo jamaicensis socorroensis) flying, Socorro Island, Revillagigedo Archipelago Biosphere Reserve / Archipielago de Revillagigedo UNESCO Natural World Heritage Site (Socorro...

Gerrit Vyn / Red-tailed Hawk (Buteo jamaicensis) juvenile portrait, Canyon County, Idaho, USA February

Charlie Summers / Red-tailed hawk (Buteo jamaicensis) gliding above the Rio Grande River, Bosque del Apache, New Mexico, USA, December.

Ben Hall / Red-tailed hawk (Buteo jamaicensis) perched in tree, Czech Republic, November. Captive.

Ben Hall / Red-tailed hawk (Buteo jamaicensis) in flight low over long grass, Czech Republic, November. Captive.

Jack Dykinga / Red tailed hawk (Buteo jamaicensis calrus) at nest in Saguaro cactus (Carnegiea gigantea) in flowers, Sonoran Desert National Monument, Sierra Estrella Mountain Wilderness, Arizona, USA, May.

Marie Read / Red tailed hawk (Buteo jamaicensis) pair at nest on cliff, New York, USA, March.

Stephen Dalton / Red-tailed hawk (Buteo jamaicensis) on sign for Estero Bay Preserve, Florida, USA, February.

Michael Durham / Red tailed hawk (Buteo jamaicensis) perched on a fire escape, Downtown Portland, Oregon, USA, May.

John Cancalosi / Red-tailed Hawk (Buteo jamaicensis) at nest, New York, USA, May.

John Cancalosi / Red-tailed Hawk (Buteo jamaicensis) at nest, New York, USA, May.

John Cancalosi / Red-tailed Hawk (Buteo jamaicensis) at nest, New York, USA, May.

John Cancalosi / Red-tailed Hawk (Buteo jamaicensis) at nest, New York, USA, May.

John Cancalosi / Red-tailed Hawk (Buteo jamaicensis) at nest, New York, USA, May.

Shattil & Rozinski / Red-tailed Hawk (Buteo jamaicensis) in flight over snowy landscape, Cherry creek state park, Denver, Colorado, USA, October

Diane McAllister / Red tailed hawk (Buteo jamaicensis) soaring overhead. Stillwater Reservoir, Nevada, USA, February

Gerrit Vyn / Red-tailed Hawk (Buteo jamaicensis) juvenile, on ground, facing camera, Lower Klamath National Wildlife Refuge, Siskiyou County, California, USA, December.

Floris van Breugel / Red-tailed Hawk (Buteo jamaicensis )close up, feeding on a freshly caught wild Mole, November, Ithaca, New York, USA.

Philip Dalton / Red tailed hawk {Buteo jamaicensis} flying amongst and predating on Mexican free-tailed bats (Tadarida brasiliensis) flying from / to Bracken Cave and Echert James Bat Caves, Texas, USA

Philip Dalton / Red tailed hawk {Buteo jamaicensis} predating on Mexican free-tailed bats (Tadarida brasiliensis) flying from / to Bracken Cave and Echert James Bat Caves, Texas, USA

Philip Dalton / Red tailed hawk {Buteo jamaicensis} flying amongst and predating on Mexican free-tailed bats (Tadarida brasiliensis) flying from / to Bracken Cave and Echert James Bat Caves, Texas, USA

Philip Dalton / Red tailed hawk {Buteo jamaicensis} flying amongst and predating on Mexican free-tailed bats (Tadarida brasiliensis) flying from / to Bracken Cave and Echert James Bat Caves, Texas, USA

Shattil & Rozinski / Red tailed Hawk {Buteo jamaicensis} taking off from building, Denver, Colorado, USA

Shattil & Rozinski / Red tailed Hawk {Buteo jamaicensis} taking off from building, Denver, Colorado, USA

Shattil & Rozinski / Red tailed Hawk {Buteo jamaicensis} taking off from building, Denver, Colorado, USA

Shattil & Rozinski / Red tailed Hawk {Buteo jamaicensis} flying low over snow, Colorado, USA

George McCarthy / Red-tailed Hawk (Buteo jamaicensis) in flight, Big Bend National Park, Texas, USA

Rolf Nussbaumer / Portrait of a Red-tailed Hawk (Buteo jamaicensis) Bosque del Apache National Wildlife Refuge, New Mexico, USA. December 2003

Larry Michael / Red tailed hawk {Buteo jamaicensis} Wisconsin, USA

Larry Michael / Red tailed hawk {Buteo jamaicensis} Wisconsin, USA

Tom Vezo / Red-tailed Hawk {Buteo jamaicensis} rear view on branch, Raptor rehabilitation centre, Long Island, NY, USA. Captive