- Seychelles Kestrel – This species is the smallest of the Falcons, at just 10 inches long on average. These little birds live only on the Seychelles Islands off the coast of Africa. Like many species endemic to islands, the IUCN lists the Seychelles kestrel as Vulnerable to extinction.
- GyrFalcon – On the opposite side of the size spectrum is the GyrFalcon, which is the largest species in the family. They are 2 feet long, and some individuals weigh over 4 Because they are so large, these birds can hunt a wide variety of prey, from rabbits and gulls to other birds of prey.
- Peregrine Falcon – This species is the fastest animal on earth. Though they are fast on the wing, they reach their top speeds while diving. During a dive, this bird sometimes exceeds 200 mph or more! They use these dives to capture their prey before it knows what hit it.
- Saker Falcon – These birds live throughout northern Africa, parts of Europe, the Middle East, and Asia. Sadly, this species is threatened with extinction, and the IUCN lists Saker Falcons as Endangered. Some of their greatest threats are habitat destruction and collisions with power lines resulting in electrocution.