Whisky jack is a common name for the Canada jay. One of these was the Canada jay. The type species was subsequently designated as the Canada jay. A typical adult Canada jay is between long. The Canada jay itself has nine recognized subspecies. The Canada jay may wander north of the breeding range. The Canada jay typically breeds at two years of age. The Canada jay belongs to the crow and jay family Corvidae. The oldest known Canada jay recaptured in the wild was at least 17 years old. Peer allofeeding has also been observed in the Canada jay ("P. canadensis"). Red squirrels ("Tamiasciurus hudsonicus") eat Canada jay eggs. Corvids taken have ranged in size from the Canada jay ("Perisoreus canadensis") to the raven. The river is named for the Canada jay ("Perisoreus canadensis"), which the English called "magpie". Found throughout Canada, the bird is popularly known by its once-official name, "Canada jay".