240 BULLETIN 17 9, UNITED STATES NATIONAL MUSEUM 



the gray flycatcher lives mainly in the sage-covered plains and has 

 a more restricted distribution. 



Enemies. — Mr. Howsley found many sets of fresh eggs in July. 

 "Some of these," he says, "may possibly have been second layings 

 necessitated by numerous destructive forces active throughout the sec- 

 tion. I have personally seen chipmunks eating the eggs, and snakes, 

 weasels, and other predators, which overrun the district, no doubt 

 account for many destroyed nests. * * * There is a high mor- 

 tality among the young in this particular section due to sudden and 

 severe wind and rain storms during the nesting season. I have found 

 whole broods wiped out, either through being blown out of the nests, 

 or drowned in the nests. However, I think the loss is principally 

 caused by chilling after getting wet." 



DISTRIBUTION 



Range. — Western United States and Canada, wintering in Central 

 America. 



Breeding range. — Wright's flycatcher nests north to northern Brit- 

 ish Columbia (Atlin) ; Alberta (Jasper Park, Banff, and Canmore) ; 

 and southern Saskatchewan (Cypress Hills). East to southwestern 

 Saskatchewan (Cypress Hills) ; western South Dakota (Elk Moun- 

 tains) ; eastern Wyoming (Guernsey and Laramie) ; central Colo- 

 rado (Estes Park, Idaho Springs, Crested Butte, and Silverton) ; 

 and northern New Mexico (Taos Mountains, Sangre de Cristo 

 Mountains, and Willis). South to northwestern New Mexico 

 (Willis, Santa Fe, and Fort Wingate) ; southern Arizona (White 

 Mountains and Huachuca Mountains) ; and southern California (Big 

 Bear Lake and Barley Flats). West to California (Barley Flats, 

 Mount Pinos, Mineral, and Salmon Mountains) ; Oregon (Pinehurst, 

 Fort Klamath, and Powder River Mountains) ; Washington 

 (Yakima and Chelan) ; and British Columbia (Okanagan Landing, 

 168-mile House, Hazelton, Telegraph Creek, and Atlin), 



Winter range. — In winter this species is found in western Central 

 America north to Sonora (Tiburon Island and "15 miles southwest 

 of Nogales, Arizona") and south to Guatemala (Momostenango, 

 Finca El Soche,, and Finca Sepacuite) . 



Spring migration. — Early dates of spring arrival are: New Mex- 

 ico — Silver City, April 15. Colorado — Colorado Springs, April 25. 

 Wyoming — Guernsey, May 9. Montana — Columbia Falls, April 24. 

 Saskatchewan — Cypress Hills, May 31. Arizona — Fort Whipple, 

 April 11, Utah — Gooshoot Pass, May 9. Idaho — Rupert, May 5. 

 Alberta — Banff, May 20. California — Agua Caliente, April 8; 

 Redlands, April 20. Nevada — Carson City, April 21. Oregon — 

 Mulino, May 5. Washington — Kiona, April 29. British Columbia — 

 Okanagan Landing, April 24 ; Atlin, May 22. 



