ARCTIC THREE-TOED WOODPECKER. 



400. Picoides arcticus. 9.5 inches. 

 Back glossy black, without any white. Only three 

 tues, two in front and one behind. This is the most 

 common of the two species found within the United 

 States. They breed from the northern edge of the Union 

 north to the limit of trees. 



AMERICAN THREE-TOED WOODPECKER. 



401. Picoides americanus. 8% inches. 



Back barred with white; outer tail feathers barred 

 with black; yellow crown patch on male mixed with 

 white. Except on some of the higher mountain ranges 

 these birds appear in the United States only during 

 winter. They are very hardy and commence nesting 

 before snow leaves. 



Note. — ^A shrill, loud, nasal shriek, sometimes re- 

 peated. 



Nest. — In holes of trees as is usual with Woodpeckers. 

 The white eggs measure .95 x .70, 



