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.

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.

Stephane Granzotto / Harris hawk (Parabuteo unicinctus) falconry bird feeding on falconers hand.

Ann & Steve Toon / Harris hawks (Parabuteo unicinctus) on the glove, captive falconry bird, Cumbria, UK, April 2016