List of birds by flight speed
This is a list of the fastest flying birds in the world. A bird's velocity is necessarily variable; a hunting bird will reach much greater speeds while diving to catch prey than when gliding. The bird with the greatest airspeed velocity is the Peregrine falcon, able to exceed 321.8 km/h (200 mph) in its hunting dives. The greatest self-powered horizontal speed is achieved by Homing Racing Pigeons. They can fly 1100 km (700 miles) in a single day, and they have been recorded flying at 177 km/h (110 miles per hour), making them the birds with the fastest speed ever recorded on a self-powered flight, and the fastest endurance flight.
Bat flight
Bats that consume insects by hawking (aerial pursuit and capture) must be able to travel at fast speeds, and must employ a high level of maneuverability. Morphological adaptations that favor this style of flight include high wing loading, long and pointed wingtips, and wings with high aspect ratios. The bat family Molossidae is considered highly specialized at hawking, with unusually high aspect ratios and wing loading. These traits make them capable of incredibly-fast speeds. Mexican free-tailed bats are thought to be the fastest animal on earth, capable of horizontal flight speeds over a level surface up to 160 km/hr (99 mph).