428 CALIFORNIA ACADEMY OF SCIENCES. 



25. Xanthocephalus xauthocephalus. 



YELLOW-HEADED BLACKBIRD. Seen in small flocks. The 

 male has an odd way of throwing his head to one side when 

 singing. 



26. Agelaius gubernator. 

 BICOLORED BLACKBIRD. Common. 



27. Agelaius tricolor. 



TRICOLORED BLACKBIRD. Tolerably common. 



28. Sturnella magna neglecta. 

 WESTERN MEADOWLARK. Tolerably common. 



29. Icterus cucullatus nelsoni, 



ARIZONA HOODED ORIOLE. Common. Nests in gum trees 

 were completed by the last of April. From the appearance 

 of specimens taken I should judge that it required from two 

 to three years for the males to attain full plumage. 



30. Icterus bullocki. 



BULLOCK'S ORIOLE. Common. Not found near the vicin- 

 ity of the nesting places of the Hooded Oriole. 



31. Scolecophagus cyanocephalus. 



BREWER'S BLACKBIRD. Very common. Nests in pepper 

 trees. One nest taken April 17th contained seven eggs. 



*32. Carpodacus frontalis rhodocolpus. 



CRIMSON HOUSE FINCH. Nest and fresh eggs taken April 

 18th. 



"33. Spinus psaltria. 



ARKANSAS GOLDFINCH. Tolerably common. Fed on young 

 oak buds. 



