Original: The Peregrine Falcon (Falco peregrinus), also known as the Peregrine, and historically as the "Duck Hawk" in North America, is a cosmopolitan bird of prey in the family Falconidae.
Simplified: The Peregrine Falcon (Falco peregrinus) is a cosmopolitan bird of prey in the family Falconidae. It can also be known just as the Peregrine, and was once called the "Duck Hawk" in North America.