Mountain region from central British Columbia south to northern New Mexico and east (in winter) to western South Dakota and Nebraska. The white-breasted woodpecker (_D. v. leucothorectis_) is found chiefly in Arizona and New Mexico but also east to central Texas and north to southern Utah. The Chihuahua woodpecker (_D. v. icastus_) occurs principally in western Mexico but occurs also in southern Arizona and southwestern New Mexico. _Migration._--As stated above, the hairy woodpeckers are generally nonmigratory and may be found in midwinter even in the northern parts of their range, as Alaska, Mackenzie (Fort Simpson), and Manitoba (Aweme, Minnedosa, and Roseau River). Nevertheless, some individuals are given to a certain amount of wandering during the winter months, which explains the occasional records of some subspecies far outside of their normal range. There also is more or less vertical migration in the mountainous regions of the north and west, the birds descending into the lower valleys during the winter season. This is noted particularly in the Rocky Mountain form, which in winter has been taken east to Nebraska and South Dakota. Despite the fact that during the past 18 years several hundred individuals of this species have been marked with numbered bands, and many have been subsequently recaptured, there is no evidence that any of these moved at any time more than a few miles from the point of banding. _Egg dates._--British Columbia: 8 records, April 27 to June 24. California: 43 records, March 23 to June 21; 22 records, April 28 to May 29, indicating the height of the season. Colorado: 10 records, May 5 to June 18. Florida: 18 records, April 10 to May 16; 9 records, April 22 to 28. Illinois: 8 records, May 1 to 23. Iowa: 8 records, April 21 to May 15. Labrador: 5 records, May 26 to 30. Massachusetts: 17 records, May 1 to June 5; 9 records, May 10 to 19. Ontario: 8 records, May 6 to June 16. DRYOBATES VILLOSUS SEPTENTRIONALIS (Nuttall) NORTHERN HAIRY WOODPECKER HABITS