SAN LUCAS FLYCATCHER 253 



The range as outlined includes the two North American races of 

 this species. The typical western flycatcher {Empidoncuy; difjicilis 

 difficilis) is the form found in the United States, Canada, and Alaska, 

 while the San Lucas flycatcher {E. d. cineritkcs) is confined to Baja 

 California. An additional nonmigratory race is found in central and 

 southern Mexico. 



Spring migratimi. — Early dates of spring arrival are: New 

 Mexico — Apache, May 12. Colorado — Littleton, May 11. Wyoming — 

 Wheatland, May 15. Montana — Fortine, May 14. Arizona — Tucson, 

 March 24. California — Berkeley, March 12. Oregon, Weston, 

 March 20. Washington — Tacoma, March 24. British Columbia — 

 Courtenay, March 31. Alaska — ^Ketchikan, May 6. 



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

 Lazaria Bird Reservation, September 30 (imusually late). British 

 Columbia — Courtenay, September 9. Washington — Seattle, Septem- 

 ber 17. Oregon — Coos Bay, September 20. California — Pasadena, 

 October 10. Wyoming — Yellowstone Park, September 16. Colora- 

 do — Colorado Springs, September 19. Arizona — Huachuca Moun- 

 tains, October 1. 



Egg dates. — British Columbia: 4 records, June 16 to Julj' 3. 



California : 113 records, April 10 to July 27 ; 57 records, May 6 

 to June 17, indicating the height of the season. 



Colorado : 16 records, June 4 to July 23 ; 8 records, June 19 to 27. 



Baja California: 3 records, June 21 to July 27. 



Washington : 13 records. May 20 to July 25 ; 7 records, June 6 to 22. 



EMPIDONAX DIFFICILIS CINERITIUS Brewster 



SAN LUCAS FLYCATCHER 



HABITS 



The Lower California race of Empidonax difficilis breeds in the 

 mountains of the Cape region of that peninsula and from there north- 

 ward to the Sierra San Pedro Martir. It was described and named by 

 William Brewster (1888) as a new species, based on a series of some 

 25 specimens collected by M. A. Frazar at La Laguna. He describes 

 it as "most nearly like E. difficilis but with the general coloring much 

 duller, the upperparts with scarcely a tinge of greenisli, no decided 

 yellow beneath, excepting on jugulum and abdomen; wing-bands 

 brownish white." He says of it elsewhere (1902) : 



The St. Lucas Flycatcher is resident in the Cape Region, where it is not 

 uncommon. Mr. Frazar found it in the greatest numbers in the Sierras de la 

 Laguna in May and early June. He also (ibtaine<l si>ecimens at San Jos^ del 

 Rancho in July and at La Paz in February and March. Mr. Bryant has taken 

 it at Comondu, and San Benito and Santa Margarita Islands, while on San 



