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The female kestrel is larger than the male, though less so than larger falcons, being typically about 10% to 15% larger within a subspecies. The more northern subspecies tend to larger sizes (northern hemisphere), with a large northern female being about twice the size of a small southern male.
The American kestrel is the only New World species termed "kestrel". The molecular data of Groombridge [ 1 ] as well as morphological peculiarities (like grey wings in males and a black ear-spot) and biogeography , strongly support the view that this species, among the Falco falcons, is not a kestrel at all in the phylogenetic sense but perhaps ...
The traditional term for a male falcon is tercel (British spelling) or tiercel (American spelling), from the Latin tertius because of the belief that only one in three eggs hatched a male bird. Some sources give the etymology as deriving from the fact that a male falcon is about one-third smaller than a female [ 18 ] [ 19 ] [ 20 ] ( Old French ...
The American Kestrel is the smallest bird of prey, and it's a member of the falcon family. They're found all over North America, and their diet consists largely of insects like grasshoppers. They ...
“The American kestrel species is just declining all over its range, Gray added. ... A male Pine Grosbeak enjoying the December sun. It is an infrequent winter visitor in central Montana, but ...
Light American males may resemble the American kestrel (F. sparverius, not a typical kestrel), but merlin males have a gray back and tail rather than the reddish-brown of the kestrels. Light European males can be distinguished from kestrels by their mainly brown wings.
The common kestrel (Falco tinnunculus), also known as the European kestrel, Eurasian kestrel or Old World kestrel, is a species of predatory bird belonging to the kestrel group of the falcon family Falconidae. In the United Kingdom, where no other kestrel species commonly occurs, it is generally just called "kestrel". [2]
Trogons have soft, often colorful, feathers with distinctive male and female plumage. ... American kestrel, Falco sparverius (n) Merlin, Falco columbarius;