A small, slender European hawk (Falco alaudarius), allied to the sparrow hawk. Its color is reddish fawn, streaked and spotted with white and black. Also called windhover and stannel. The name is also applied to other allied species.
small North American falcon
small Old World falcon that hovers in the air against a wind
a parakeet-sized falcon
The smallest of our native falcons ( Falco sparverius) and a migrant raptor of the North Country. From the Middle English castrel, origins obscure.
The Kestrel engine is an RP-1/liquid oxygen pressure-fed rocket engine. The Kestrel engine was developed by Space X for upper stage use on the Falcon 1 rocket.