The Peregrine Falcon or Peregrine, scientifically known as Falco Peregrinus, is a large bird of prey. In North America the bird was popularly known as Duck Hawk. It belongs to the family Falconidae. This bird has one of the most global distributions than any one of the Raptors in the world. Except Antarctica, the bird was able to survive in every corner of the world and in wide variety of climates ranging from urban cities, the tropics, deserts to the tundra.
Like other members of the family Falconidae, the Peregrine Falcon is also large in size. It has bluish gray coloration of its back, white under parts, yellowish cere and beak, and black head and claws. There is marked sexual dimorphism and like other raptors females are larger than the males (males weigh around 440-750 grams and females weigh around 0.9-1.5 kg). Plumage is same in both cases. Average body length of an adult Falcon is 35-55 cm and average wingspan is about 80-120 cm. They reach their sexual maturity at one year of age. Being one of the fastest creature in the world; when hunting, this bird can reach a speed of 325 km per hour. The major diet of Falcon is medium-sized birds such as pigeons, waterfowl, songbirds, and waders. They occasionally hunt small sized mammals.
Although the Peregrine Falcon is widespread in the world, there are some areas where there was news of extension of this species. The major cause behind their extinction was DDT and other pesticides. Scientists till now have recognized about 18 subspecies of this bird. These subspecies differ in their appearance and range. The Falcon has been used as Falconry for 3000 years or even more than that, representing a nice relationship with humans. They are even used to scare away birds in the airports.