Woodpeckers (Picidae)
American Three-toed Woodpecker (Picoides dorsalis) - HBW 7, p. 495
French: Pic à dos rayé
German: Fichtenspecht
Spanish: Pico Tridáctilo Americano
Other common names: White-backed Three-toed Woodpecker; Three-toed Woodpecker (with P.tridactylus)
Taxonomy: Picoides dorsalis Baird, 1858, Laramie Peak, Wyoming.
Forms a superspecies with P. tridactylus, and commonly treated as conspecific; genetic evidence, however, coupled with geographical isolation and differences in plumage, indicate that the two are probably better considered separate species. Closely related also to P. arcticus, but probably less so to other congeners. Races intergrade. Labrador birds named as separate race labradorius, supposedly larger and darker with more barred flanks than bacatus, but differences thought not to be constant or significant, and new taxon subsequently abandoned by describer. Three .. View all taxonomy...
Forms a superspecies with P. tridactylus, and commonly treated as conspecific; genetic evidence, however, coupled with geographical isolation and differences in plumage, indicate that the two are probably better considered separate species. Closely related also to P. arcticus, but probably less so to other congeners. Races intergrade. Labrador birds named as separate race labradorius, supposedly larger and darker with more barred flanks than bacatus, but differences thought not to be constant or significant, and new taxon subsequently abandoned by describer. Three subspecies recognized.
Subspecies and Distribution:
- fasciatus Baird, 1870 - NW & C Alaska E to NW Canada (E to NW & C Mackenzie and N Saskatchewan) and S to Oregon, N Idaho and W Montana.
- bacatus Bangs, 1900 - N Manitoba and N Ontario E to N Quebec, Labrador and Newfoundland, S to Great Lakes, NE New York, N New Hampshire and NE Maine.
- dorsalis Baird, 1858 - Rocky Mts from Montana to EC Nevada, Arizona and NW New Mexico.
- Least Concern Enlarge map
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Female climbing up a tree. Locality Denali National Park and Preserve, Alaska, USA (United States) (ssp fasciatus)
Wayne Hall 19 August 2012 36 weeks ago 53 sec 4.5 -
A female creeping on a trunk Locality Algonquin Provincial Park, Ontario, Canada (ssp bacatus)
Luc Fazio 31 March 2007 4 years ago 19 sec 3.7 -
A female feeding on bark and preening Locality Algonquin Provincial Park, Ontario, Canada (ssp bacatus)
Luc Fazio 31 March 2007 4 years ago 23 sec 3.4
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An adult male foraging on a tree trunk.
Locality Elkford, British Columbia, Canada (ssp fasciatus)
David Beadle 17 June 2012 11 weeks ago 4 -
Adult male, seen from behind, sitting on a tree trunk at Blacktail Plateau.
Locality Yellowstone National Park, Wyoming, USA (United States) (ssp dorsalis )
Pia Öberg 17 June 2007 1 year ago 3.5 -
adult male on tree
Locality Black Hills, South Dakota, USA (United States) (ssp dorsalis)
Michael Retter 1 June 2007 3 years ago 3
- No sound recordings available yet
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