Common Kestrel (Falco tinnunculus) in the aviary of Dulahazra Safari Park at Chokoria about 107 kilometers from Chittagong on March 30, 2007. The Common Kestrel is a bird of prey species belonging to the kestrel group of the falcon family Falconidae. It is also known as the European Kestrel, Eurasian Kestrel, or Old World Kestrel In Britain, where no other brown falcon occurs, it is generally just called "the Kestrel".