Subspecies and Distribution. O.c.canadensisShaw,1804—SWCanada(SBritishColumbia&SWAlberta),WUSA(Washington,Montana,Wyoming,NIdaho,NorthDakota,SouthDakota,NWNebraska,WColorado&NNewMexico). O.c.mexicanaMerriam,1901—SWUSA(SWArizona&SWNewMexico),NWMexico(NWSonora).ReestablishedinCoahuilaandChihuahua,Mexico. O.c.nelsoniMerriam,1897—NWUSA(Oregon,SWIdaho,Nevada,NECaliforniatotheGreatBasinDesertinUtah,SCalifornia&SArizona)andNWMexico(NBajaCalifornia). O.c.sierraeGrinnell,1912—California(C&SSierraNevada). O. c. weemsi Goldman, 1937 — S Baja California, Mexico. in Bovidae

Subspecies and Distribution. O.c.canadensisShaw,1804—SWCanada(SBritishColumbia&SWAlberta),WUSA(Washington,Montana,Wyoming,NIdaho,NorthDakota,SouthDakota,NWNebraska,WColorado&NNewMexico). O.c.mexicanaMerriam,1901—SWUSA(SWArizona&SWNewMexico),NWMexico(NWSonora).ReestablishedinCoahuilaandChihuahua,Mexico. O.c.nelsoniMerriam,1897—NWUSA(Oregon,SWIdaho,Nevada,NECaliforniatotheGreatBasinDesertinUtah,SCalifornia&SArizona)andNWMexico(NBajaCalifornia). O.c.sierraeGrinnell,1912—California(C&SSierraNevada). O. c. weemsi Goldman, 1937 — S Baja California, Mexico.