A peregrine falcon is a bird of prey, specifically classified as a falcon within the family Falconidae. It is known for its incredible speed, capable of reaching over 240 miles per hour (386 kilometers per hour) when diving to catch prey, making it the fastest bird in the world. Peregrine falcons are found on every continent except Antarctica and thrive in a variety of habitats, including urban areas where they nest on tall buildings. Their keen eyesight enables them to spot prey from great distances, typically feeding on smaller birds. This remarkable predator exemplifies adaptation and agility in the avian world.