One of nature's most efficient aerial killers, Peregrine Falcons are typically seen high atop cliffs within Grand Canyon National Park. The Falcons usually stay high since they can spot their prey from over 2,000 feet off the ground and once they have selected a poor critter to snag, they can dive towards the earth at speeds upwards of 200 mph. During the late 1900's Peregrines became nearly extinct and were bread in captivity to help stabilize their population. In 1999 the falcons were taken off the endangered species list and there are now over 1,600 breading pairs in the United States.
What does a Peregrine Falcon look like?
This video from the BBCWorldwide shows the bird of prey in action: