Peregrine falcon (Falco peregrinus) in flight, Grand Teton National Park, 2014.
Also known by the names duck hawk and simply peregrine, this widespread bird of prey has a very memborable color pattern: blue-grey back, barred white underparts (that are reminiscent of pants on its legs) and a strikingly-black head. Peregrine falcons, like other bird-eating raptors, exhibit sexual dimorphism. Females are considerably larger than males. Interestingly, yet not well-known, the peregrine falcon is the fastest member of the animal kingdom! This bird is known for the incredible speeds reached during its high-speed dive in the air when hunting that commonly reach over 200 mph. The record speed of a peregrine falcon is 242 mph (389 km/h)! American peregrine falcons have one of the best comeback stories. They were virtually eradicated from North America by pesticide poisoning in 1950-1970 but after significant recovery efforts, they have made an incredible rebound.
U.S. National Park Service
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