The Hen Harrier (Circus cyaneus) is a bird of prey that breeds in Eurasia. In the winter they migrate to more southerly areas like southern Europe and southern temperate Asia. The species have distinct plumages between the male and female. The male is gray above and white below with the exception of the upper breast which is gray. The rump is white, and the wings are gray with black wingtips. A female Hen Harrier is brown above with white upper tail coverts and buff and brown streaked underparts. Their diet is mostly small mammals, and some birds are also regularly hunted.