ARCTIC THREE-TOED WOODPECKER. 
400. Picoides arcticus. 9% inches. 
As implied by the name, members of this genus have but 
three toes, two in front and one behind. The plumage of 
this species is entirely black above, and whitish below, with 
the flanks barred with blackish. The male has a yellow patch 
on the crown. They breed abundantly in coniferous forests 
in mountain regions throughout their range, laying their four 
or five pure white eggs in decayed tree stumps (.95 x .70). They 
do more boring for their insect food, and, during mating season, 
are very persistent in their roll call on dead limbs of trees. 
AMERICAN THREE-TOED WOODPECKER. 
401. Picoides cimericanus. 9 inches. 
The greatest difference between this bird and the last is 
on the back, it having several narrow bars of white near the 
neck or a patch of white in place of the bars. Breeding habits 
are the same. 
ALASKA THREE-TOED WOODPECKER. 
401a. Picoides americanus fasciatus. 9 inches. 
In every particular similar to the last, with the patch of 
white on the back possibly a little larger. Habits just the 
same (not illustrated). 
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