HELOISE'S HUMMINGBIRD 417 



DISTRIBUTION 



Range. — Coastal regions of California and northwestern Mexico; 

 casual in Washington, Oregon, and Arizona. 



Breeding range. — Allen's hummingbird is found during the nesting 

 season only in the narrow coastal district that extends nearly the full 

 length of California from San Clemente and Santa Catalina Islands 

 northward to San Francisco, Berkeley, and Eureka. Four specimens 

 taken on July 10, 1905, in the San Pedro Martir Mountains, Baja 

 California, may possibly indicate a more southern limit of the breed- 

 ing range. 



Winter range. — In winter the species is found north to southern 

 California (Santa Cruz Island) ; and south to central Baja California 

 (San Quintin and Santo Domingo). It also has been detected at 

 Santa Barbara, Chihuahua, in the latter part of September. 



Spring migration. — Early dates of spring arrival in California 

 are: Berkeley, February 13; Hay wards, February 16; Escondido, 

 February 22. 



Fall migration. — The species appears to retire from the northern 

 parts of its range during August and September, late dates being: 

 Palo Alto, August 24: Berkeley, September 29; Presidio of San 

 Francisco, September 30. 



Casual records. — Two specimens were collected at the mouth of 

 the Pistol River, Curry County, Oreg., on June 23, 1929; and one 

 was taken at Seattle, Wash., on May 27, 1894. In Arizona there 

 are several records as follows: One was secured in the Santa Cata- 

 lina Mountains, July 23, 1884; specimens were taken near Bisbee 

 during August and September 1892 ( ?) ; and in the Huachuca Moun- 

 tains in July 1896, in July 1902, and on July 10 and August 1, 1929. 



Egg dates. — California: 100 records, February 2 to June 28; 50 

 records, March 21 to May 22, indicating the height of the season. 



ATTHIS HELOISA HELOISA (De Lattre and Lesson) 

 HELOISE'S HUMMINGBIRD 



HABITS 



On July 2, 1896, two female hummingbirds were taken in Ramsay 

 Canyon, in the Huachuca Mountains, Ariz., by H. G. Rising. These 

 two specimens were sent to Mr. Ridgway, who described and named 

 them (1898) as a new species, Morcom's hummingbird {Atthis mor- 

 comi), in honor of G. Frean Morcom. In his description he states 

 that "the adult male of this species is unfortunately unknown. The 

 adult female differs from that of A. heloisa in being pure bronze-green 

 above instead of almost coppery bronze inclining to greenish only 



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