226 U. S. NATIONAL MUSEUM BULLETIN 211 



from their summer haunts by the end of August, but a few individuals, 

 especially the immature, remain into September. 



DISTRIBUTION 



Breeding range. — The Arizona hooded oriole breeds from south- 

 eastern California (Colorado River Valley), central and southeastern 

 Arizona (Topock, San Carlos, Safford), and southwestern New Mexico 

 (Silver City); south to northeastern Baja California (eastern base of 

 Sierra San Pedro Martir, lat. 31° N.) and southern Sonora (Guaymas, 

 Agiabampo). Casual in southwestern Utah (St. George, Beaver Dam 

 Wash), where it may breed. 



Winter range. — Winters from central Sonora (Hermosillo) cas- 

 ually to southern Arizona (Tucson); south to southern Sinaloa 

 (Escuinapa, Rio Mazatlan). 



ICTERUS CUCULLATUS CALIFORNICUS (Lesson) 



California Hooded Oriole 



Contributed by Robert S. Woods 

 HABITS 



This race of the hooded oriole has extended its range northward on 

 the Pacific coast in recent years casually to the San Francisco Bay 

 region, but W. L. Dawson (1923) has placed Santa Barbara as the 

 northern limit of its common occurrence. Undoubtedly the extensive 

 ornamental plantings which have been made in southwestern California 

 have greatly increased the amount of country suitable for this bird and 

 have correspondingly increased its potential population. 



Like other species, this one occasionally departs markedly from its 

 usual routes and schedules. F. C. Lincoln (1940) reports one indi- 

 vidual that was banded at Los Angeles on January 22, 1939, and was 

 found dead near Garden City, Kans., about August 5 of that year. 



Spring. — In Los Angeles County the hooded orioles are usually 

 first seen during the latter half of March, but in some years their 

 arrival in any given breeding locality may be delayed until after the 

 beginning of April. Dawson (1923) said "[This oriole] begins to arrive 

 in California late in March. I say 'begins to arrive' because I think 

 it altogether probable that there are two streams or stocks of migrants, 

 one arriving early and nesting in April and July, the other nesting 

 only once, in late May or early June." 



Courtship. — Nothing appears to have been published to indicate 

 that the courtship of this race differs in any way from that of the 

 Arizona bird. 



