122 BULLETIN 17 4, UNITED STATES NATIONAL MUSEUM 



ably Mount Kainier, and Mount Baker) ; British Columbia (Chilli- 

 wack, Clinton, Willow River, and Hazel ton) ; and Alaska (Chicagof 

 Island, Glacier, Copper River, Lake Clark, Mount McKinley, Nulato, 

 and Kowak River). 



Several races of this species have been recognized, three of which 

 are included in the range above outlined. The American three-toed 

 woodpecker {P. t. tacatus) ranges from Maine, Newfoundland, and 

 Labrador west to northern Manitoba and southern Mackenzie; the 

 Alpine three-toed woodpecker {P. t. dorsalis) is the Rocky Mountain 

 form and is found in that region from Montana and Idaho south to 

 the higher mountains of New Mexico and Arizona ; the Alaska three- 

 toed woodpecker {P. t. fasciatus) is found from Alaska, Yukon, and 

 western Mackenzie south to Oregon, Idaho, and Montana. 



Wliile the three-toed woodpecker is not regularly migratory, it 

 appears likely that during severe winters it withdraws somewhat 

 from the northern parts of its range. At this season it is occasionally 

 collected or observed short distances south of its normal range (Massa- 

 chusetts, southern Wisconsin, southern Minnesota, and southern New 

 Mexico). 



Egg dates. — Alberta : 8 records. May 23 to June 16. 



Arctic America : 5 records, May 15 to June 9. 



Labrador : 3 records, May 26 and 27. 



New York : 3 records, May 14 to June 8. 



PICOiDES TRIDACTYLUS FASCIATUS Baird 



ALASKA THREE-TOED WOODPECKER 

 HABITS 



The range of this race of the three-toed woodpecker extends 

 throughout the Hudsonian and Canadian Zones of western Canada 

 and Alaska, and a short distance southward into some of the Western 

 States, where it intergrades with the next form in the boreal forests 

 of the Rocky Mountains. 



Ridgway (1914) describes it as similar to the eastern race, "but 

 with much more white on back, the white bars much larger and more 

 or less coalesced along median line, forming a more or less con- 

 tinuous longitudinal patch; whitish spots on forehead much larger, 

 sometimes coalesced into a nearly uniform dull white frontal area; 

 upper tail-coverts and lower rump barred or spotted with white; 

 sometimes even the wing-coverts and middle rectrices are spotted 

 with white; black malar stripe narrower and usually less distinct, 

 and black bars on sides and flanks narrower; averaging slightly 

 larger." 



Dr. E. W. Nelson (1887) says that this woodpecker occurs "on 

 the headwaters of the Mackenzie River, extending thence north along 



