MOUNTAIN BLUEBIRD 287 



and eastern Sonora (Nacori and Alamos). Irregular or casual in 

 winter east to eastern Kansas (Manhattan) ; Oklahoma (Caddo) ; and 

 Texas (Bonham, Corsicana, San Antonio, and Corpus Christi); and 

 Nuevo Le6n (Monterrey). South to southern Sonora (Alamos). 

 West to Sonora (Alamos and Sonoyta) ; northern Lower California 

 (San Ram6n, Rancho San Pablo, and Guadalupe Island, one record) ; 

 the coast valleys of California north to San Francisco Bay (San Diego, 

 Santa Barbara, occasional on Santa Cruz Island, Salinas, and Sonoma) ; 

 east of the Coast Range in Oregon (Medford and Portland) ; and east 

 of the Cascades in Washington (Yakima). 



Since the first decade of this century the mountain bluebird seems 

 to have increased and spread eastward, at least in the northern part of 

 its range. At Eastend, Saskatchewan, it is reported to have increased 

 noticeably between 1910 and 1922; at Aweme, Manitoba, it was 

 "rare" in 1890, and "common" before 1928; at Lake St. Martin, 

 Manitoba, in 1931 the Indians reported it to be a comparatively 

 recent arrival. A young bird, thought to be this species, was shot 

 but not recovered, June 10, 1931, at Churchill and an adult specimen 

 was collected there on August 6, 1938. 



Migration. — Some early dates of spring arrival are: Nebraska — 

 Hastings, March 5. North Dakota — Charlson, March 19. Manito- 

 ba — Aweme, February 28. Saskatchewan — Indian Head, March 16. 

 Colorado — Fort Collins, February 12. Wyoming — Wheatland, Febru- 

 ary 28. Montana — Helena, March 12. Alberta — Camrose, March 14. 

 Utah — Corinne, March 8. Idaho — Meridian, February 17. British 

 Columbia — West Summerland, February 14 ; Atlin, April 13. Yukon — 

 Dawson, April 20. Alaska — Dyer, April 20. 



Some late dates of fall departure are: Yukon — Carcross, September 

 24. British Columbia — Atlin, September 24 ; Chilliwack, November 6. 

 Alberta — Glenevis, October 15. Idaho — Priest River, October 13. 

 Montana — Fortine, November 10. Wyoming — Laramie, November 3. 

 Utah — Ogden, November 4. Colorado — Walden, November 5. 

 Saskatchewan — Eastend, October 14. Manitoba — Brandon, Octo- 

 ber 28. North Dakota — Argusville, October 11. 



One very interesting banding record is available. A young bird 

 banded at Camrose, Alberta, on June 9, 1939, was caught previous to 

 November 30, 1939, at Wingate, Runnels County, Tex. 



Casual records. — At Cape Etolin, Nunivak Island, Alaska, three 

 specimens were collected on September 23 and 28, 1927. At Barrow, 

 Alaska, two specimens were collected on June 5, 1930, and one on 

 May 20, 1937. All five of these birds were females. There are two 

 records for the species in Minnesota: a pair seen closely on April 5 

 and 7, 1935, near St. Cloud; and one to five seen from December 1942 

 to March 14, 1943, at Duluth. 



