Immatures take flight at 42 days. Like all falcons, the peregrine uses an inverted dive to catch its prey. They feast mainly on birds, but occasionally will eat mammals, reptiles, amphibians and fish. The largest of the falcons is the gyrfalcon . It has three color phases white, gray and black.
Gyrfalcons are the most northerly of the falcons and reside in the Arctic Circle.
They prefer open country, mountains and tundra. Birders might catch a glimpse of gyrfalcons when they migrate down to the Northern Hemisphere. Immatures take flight after 20 days. The gyrfalcon s diet consists mainly of birds. Some call this bird the winged monarch because of its fierce, proud nature.