Red-shouldered Hawk (Buteo lineatus) [XC730174]
by Bobby Wilcox from Bolton Notch State Park, Tolland County, Connecticut, United States (call)
Red-shouldered Hawk (Buteo lineatus) [XC783185]
by Rick Wheat from San Bernardino National Wildlife Refuge, Cochise County, Arizona, United States (call)
Subspecies
Sometimes placed in Asturina. Apparently close to Ridgway's Hawk (Buteo ridgwayi), Roadside Hawk (Rupornis magnirostris) and, to a lesser extent, Grey-lined Hawk (Buteo nitidus).
The following 5 subspecies are recognised:
elegans Cassin, 1855 - Southern Oregon (north-western USA) to northern Baja California (Mexico).
lineatus (Gmelin, 1788) - Eastern North America, from southern Canada to central USA.