The fastest flying bird in level flight is the White-throated Needletail, also known as the Needle-tailed Swift, which can reach speeds of up to 105 mph (169 km/h). Other fast-flying birds include the Peregrine Falcon, which is known for its incredible diving speeds of over 240 mph (386 km/h), and the Red-breasted Merganser, which can fly at speeds of up to 100 mph (161 km/h).