VAUX'S SWIFT 303 



and all proved to be of the smaller and paler variety. The four un- 

 handed birds were retained as museum specimens, and the others were 

 released, 



"After careful comparison with material kindly lent by the Museum 

 of Vertebrate Zoology of the University of California and by the 

 Bureau of Biological Survey, it is obvious that the five specimens taken 

 at Louisiana State University in February belong to Chaetura vauxi. 

 Both Dr. H. C. Oberholser and George Willett have examined the 

 specimens and confirmed this identification. It is therefore probable 

 that the specimen captured and released in February 1938 was also 

 of this species." 



DISTRIBUTION 



Range. — ^Western North America. 



Breeding range. — The breeding range of Vaux's swift extends north 

 to southeastern Alaska (probably Baranof Island and probably 

 Thomas Bay) ; and northern British Columbia (probably Flood 

 Glacier and probably Telegraph Creek). East to British Columbia 

 (probably Telegraph Creek, Hazelton, Lac la Hache, Vernon, Edge- 

 wood, and Newgate) ; western Montana (probably Glacier National 

 Park, probably Kalispell, and Eed Lodge) ; west-central Oregon 

 (Fort Klamath and Mount McLoughton) ; and eastern California 

 (Meadow Valley, probably Campbells Hot Springs, and probably 

 Kenawyers). South to central California (probably Kenawyers, and 

 Santa Cruz). West to the coastal regions of California (Santa Cruz, 

 San Rafael, Sebastopol, and Eureka) ; Oregon (Tillamook and 

 Beaverton) ; Washington (Tacoma, Seattle, Crescent Lake, and 

 Bellingham) ; British Columbia ( Chilli wack, Comox, and Courte- 

 nay) ; and southeastern Alaska (Chickamin River and probably 

 Baranof Island). 



Winter range. — Imperfectly known. At this season the species 

 has been detected north to East Baton Rouge Parish, La. (see above), 

 Taxco, State of Guerrero, and Leguna del Rosario, State of Tlaxcala, 

 Mexico ; and south to San Lucas and Mazatenango, Guatemala. 



Spring migration. — Early dates of spring arrival are: Arizona — 

 Chiricahua Mountains, April 13; Agua Caliente, April 22. Cali- 

 fornia — Eureka, April 10; Buena Park, April 14; Redwood City, 

 April 16; Azusa, April 23. Oregon — Mercer, April 29; Beaverton, 

 April 30 ; Fort Klamath, May 6. Washington — Nisqually, April 11 ; 

 Tacoma, April 23; Clallam Bay, May 3. Idaho — Coeur d'Alene, 

 May 6; Rose Lake, May 11. British Columbia — Chilliwack, April 

 26 ; Arrow Lakes, April 28 ; Revelstoke, May 12. 



Fall migration. — Late dates of fall departure are: Alaska — Cas- 

 cade Bay, September 9. British Columbia — Kispiox Valley, Septem- 



