American Tree Sparrow (Spizelloides arborea) [XC210766]
by Paul Driver from Isabella Lake area, Superior National Forest, Lake County, Minnesota, United States (call)
American Tree Sparrow (Spizelloides arborea) [XC345976]
by Ted Floyd from Boulder, Boulder County, Colorado, United States (flight call)
Subspecies
Traditionally placed in genus Spizella, which it resembles. Recently published molecular studies suggest that this species is best placed in present genus, possibly as sister to the four other members. Geographical variation weakly marked.
The following 2 subspecies are recognised:
ochracea (Brewster, 1882) - Breeds Alaska and in western Canada from northern Yukon and north-western Northwest Territories south to north-western British Columbia and probably north-central Alberta. Winters in southern Canada (western Saskatchewan) and northern and western USA from South Dakota and northern Iowa south to north-eastern California, western and northern Nevada, northern Arizona, central New Mexico and central Texas.
arborea (Wilson, 1810) - Breeds in north-central and eastern Canada from central and eastern Northwest Territories and western Nunavut east to Labrador, south to northern Saskatchewan, northern Manitoba, northern Ontario and central Quebec. Winters in eastern USA (from Minnesota, Wisconsin and northern Michigan south to Oklahoma, Arkansas, Tennessee, North Carolina and Virginia) and south-eastern Canada (southern from central Ontario and south-western Quebec, east to New Brunswick and Nova Scotia).
BirdLife International Species Factsheet