Peregrine Falcons are the largest falcon across most continents, with broad, pointed wings and a long tail. Long primary feathers give the Peregrine a long-winged shape, so look at shape as well as size. Males are smaller than females in most raptors. Hence Peregrines may be mistaken for substantial female Merlins or small male Gyrfalcons.
Adults have a dark head with thick sideburns and a blue-gray upper body with streaked underparts. The breasts of juveniles are strongly marked, with vertical streaks instead of horizontal bars. Despite significant age and geographic variance, a steely, barred appearance prevails.
Peregrine Falcons use stoops, or rapid, dramatic dives, to catch medium-sized birds in the air. They are masters at collecting pigeons in cities. They prey on shorebirds and ducks in other areas. They frequently perch on high ledges, waiting for the appropriate moment to launch an aerial assault.
Peregrine Falcons can be found perched or nesting atop skyscrapers, water towers, cliffs, power pylons, and other high structures. Examine the skies if a mudflat full of shorebirds and ducks suddenly rises from the ground. There's a good chance a Peregrine Falcon (or Merlin) is nearby. Peregrines are found across North America, but they are more common on the coasts. Detailed information about all falcons species is right here.