400. Picoides arcticus. 9.5 inches
Back glossy black, without any white. Only three toes, 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. 8¾ 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 repeated.
Nest.—In holes of trees as is usual with Woodpeckers. The white eggs measure .95 × .70.
YELLOW-BELLIED SAPSUCKER
402. Sphyrapicus varius. 8½ inches