Alan Murphy/ BIA / Harris' Hawk (Parabuteo unicinctus) flying, Texas

ZSSD / Harris' Hawk (Parabuteo unicinctus)

Kim Taylor / Harris' hawk (Parabuteo unicinctus) attacking a rattlesnake (composite image)

Kim Taylor / Harris' hawk (Parabuteo unicinctus) landing. (digitally enhanced) Captive

Rolf Nussbaumer / Harris' hawk {Parabuteo unicinctus} Texas, USA.

Tom Vezo / Harris' Hawk (Parabuteo unicinctus) perching on branch with wings spread, southeast Arizona

Ernie Janes / Harris's hawk (Parabuteo unicinctus) in flight, captive falconry bird.

Ernie Janes / Harris's hawk (Parabuteo unicinctus) in flight, captive falconry bird.

Oscar Dewhurst / Long-eared owl (Asio otus) in flight over farmland. Durham, UK. May

Oscar Dewhurst / Long-eared owl (Asio otus) in flight over farmland. Durham, UK. May

Stephane Granzotto / Harris hawk (Parabuteo unicinctus) perched in tree, controlled conditions with falconry bird.

Stephane Granzotto / Harris hawk (Parabuteo unicinctus) landing on prey, controlled conditions with falconry bird.