"Peregrin Falcons are the fastest birds on record."

The Peregrine Falcon is a bird of prey that lives mostly along mountain ranges, river valleys, coastlines, and increasingly in cities. A study testing the flight physics of an 'ideal falcon' found a theoretical speed limit at 400 km/h (250 mph) for low altitude flight and 625 km/h (390 mph) for high altitude flight. In 2005, Ken Franklin recorded a falcon stooping at a top speed of 389 km/h (242 mph).