Peregrine Falcon: Speed in a Stoop

The peregrine falcon is regarded as the fastest bird when it stoops toward prey. In this hunting dive, it may reach about 320 km/h (200 mph). The roughly 389 km/h (242 mph) figure comes from experimental dives by a trained falcon after release from an aircraft; it is not a typical speed in wild hunting, and the conditions of such measurements have been debated. [1–3]