478 U. S. NATIONAL MUSEUM BULLETIN 211 



years, April 30). Colorado — Colorado Springs, May 2 (median of 

 26 years, May 18). Utah — Saint George, May 13. Wyoming — 

 Wheatland, May 1; Laramie, May 13 (average of 11 years, May 23). 

 Idaho — Grangeville, May 10; Meridian, May 13 (median of 4 years, 

 May 16). Montana — For tine, May 9 (median of 21 years, May 20). 

 Alberta — Banff, April 30 (median of 7 years, May 21) ; Pelican Portage, 

 Athabasca River, May 19. California — San Clemente Island, March 

 23 ; Los Angeles County, April 7 (median of 27 years, May 1) . Nevada 

 — Carson City, May 2; Colorado River, Clark County, May 7. 

 Oregon — Josephine County, April 11. Coos County, May 1 (median 

 of 7 years, May 5). Washington — Shelton, April 15 (median of 5 

 years, May 3) ; Spokane, April 24 (median of 6 years, May 5). British 

 Columbia — Okanagan Landing, April 29 (median of 18 years, May 10) ; 

 Comox, Vancouver Island, May 4 (median of 24 years, May 13). 

 Alaska — Point Barrow region (only record), May 24. 



Late dates of spring departure are: El Salvador — Chilata, April 23. 

 Guatemala — La Perla, April 8. Michoac&n — Tacambaro, April 28. 

 San Luis Potosi — Tamazunchale, April 22. Sonora — Hacienda de 

 San Rafael, May 18. Baja California — San Antonio del Mar, April 

 28. Louisiana — Grand Isle, May 11. Kansas — Finney County, 

 June 1. Nebraska — North Platte and Stapleton, May 27. Arizona — 

 Whetstone Mountains, June 2; Casa Grande, June 1. Colorado — 

 Denver, June 6 (median of 15 years, May 25); Yuma, June 4. Cali- 

 fornia — Berkeley, June 7; Pasadena, May 26. Nevada — Humboldt 

 National Forest, Elko County, May 31. 



Early dates of fall arrival are: Washington — Yakima, July 24. 

 Oregon — Weston, July 1 . California — Death Valley, July 3 ; Berkeley, 

 July 17 (median of 14 years, August 13). Colorado — Beulah, July 31 

 (median of 5 years, August 3). Arizona — Mount Trumbull Region, 

 August 4; Phoenix and Whetstone Mountains, August 12. New 

 Mexico — Cloudcroft, July 18. Manitoba — Brandon, July 19. Texas — 

 Palo Duro State Park, August 10; El Paso, Brenkam, and Commerce, 

 August 29. Baja California — San Lucas, September 27. Sonora — San 

 Bernardino Ranch, August 28. Coahuila — Las Delicias, August 12. 

 Guatemala — Panajachel, November 11. El Salvador— Divisadero, 

 November 12. Honduras — Tegucigalpa, November 2. 



Late dates of fall departure are: British Columbia — Marpole, 

 Kootenay District, October 8; Okanagan Landing, September 16 

 (median of 13 years, September 6); Hazelton, August 30. Washing- 

 ton — Seattle, October 16 (median of 5 years, Septbemer 23); Spokane, 

 September 29. Oregon — Klamath County, September 28; Forest 

 Grove, September 25. Nevada — Lee Canon, Clark County, October 

 7; Carson City, September 18. California— Oakland, November 2 

 (median of 15 years at Berkeley, September 25). Alberta — Henry 



