Downy Woodpecker (Dryobates) [XC828363]
by Todd Wilson from Tuttle Marsh NWA, Iosco County, Michigan, United States (call)
Downy Woodpecker (Dryobates pubescens) [XC550078]
by Thomas G. Graves from Thornton Creek Ravine, Seattle, King County, Washington, United States (drumming)
Subspecies
Most closely related to Nuttall's Woodpecker (Dryobates nuttallii) and Ladder-backed Woodpecker (Dryobates scalaris), and has hybridized with former. DNA analyses also indicate possible relationship with Lesser Spotted Woodpecker (Dryobates minor) of the Old World. Further study is required. Nominate subspecies and medianus intergrade widely in central USA. Clinal variation in size, decreasing from north to south. Additional named subspecies nelsoni (Alaska to Alberta) and microleucus (Newfoundland) considered unacceptable.
The following 7 subspecies are recognised:
medianus (Swainson, 1832) - Central Alaska and Canada (east of Rockies, from southern Mackenzie and Alberta) east to southern Quebec and Newfoundland, and southern in USA to Nebraska and Virginia.