24 BULLETIN 174, UNITED STATES NATIONAL MUSEUM 



of the range from Missouri, Illinois, and western Virginia south to 

 southeastern Texas and southern Florida. The Sitka hairy wood- 

 pecker {D. V. sifkensis) is found in southeastern Alaska and north- 

 ern British Columbia. The Queen Charlotte woodpecker (D. v. 

 picoideus) is found only on the group of islands of that name off 

 the coast of British Columbia. Harris's woodpecker {D. v. harrisi) 

 occupies the coastal regions of southern British Columbia south to 

 northwestern California. Cabanis's woodpecker {D. v. hyloscopus) 

 is confined to certain coastal and mountain areas of California, chiefly 

 in the southern part. The Lower California hairy woodpecker {D. v. 

 ficrippsae) is restricted to the Sierra Juarez and the Sierra San Pedro 

 Martir of Baja California. The Modoc woodpecker (Z>. v. orius) 

 is found in the Sierra Nevada of central California north to Oregon 

 and Washington and east to Nevada. The Rocky Mountain hairy 

 woodpecker (Z>. v. tnonfAcola) is found through the Roclcy 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 (Z>. v. leucothorectis) is found chiefly in 

 Arizona and New Mexico but also east to central Texas and north 

 to southern Utah. The Chihuahua woodpecker (Z>. 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 dur- 

 ing 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. 



