A falcon is any one of 37 species of raptor in the genus Falcon widely distributed on all continents of the world.Adult falcons have thin tapered wings which enable them to fly at high speed and to change direction rapidly. Fledgling falcons in their first year of flying have longer flight feathers which makes their configuration more like that of a general purpose bird such as a broad wing. This makes it easier to fly while learning the exceptional skills required to be effective hunters as adults.Peregrine Falcons have been recorded diving at speeds of 200 miles per hour making them the fastest-moving creatures on Earth. Other falcons include the Gyrfalcon Lanner Falcon and the Merlin. Some small falcons with long narrow wings are called hobbies, and some which hover while hunting are called kestrels. The falcons are part of the family Falconer which also includes the Caracas Laughing Falcon, forest falcons and falconers.The traditional term for a male falcon is teller or tiercel from Latin Tiberius third because of the belief that only one in three eggs hatched a male bird. Some sources give the etymology as deriving from the fact that a male falcon is approximately one third smaller than the female. A falcon chick especially one reared for falconry, that is still in its downy stage is known as an easy. The word arose by mistaken division of Old French nu Nisan from Latin presumed discus . The technique of hunting with trained captive birds of prey is known as falconry.As is the case with many birds of prey falcons have exceptional powers of vision the visual acuity of one species has been measured at 2.6 times that of a normal human.In February 2005 the Canadian ornithologist Louis Le febrile announced a method of measuring avian intelligence in terms of a bird's innovation in feeding habits. The falcon and corridors scored highest on this scale.
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