CHECK-LIST OF COLORADO BIRDS 335 



mer resident ; common in migration ; goes as far west as 

 base of the mountains. 



560a. Western chipping sparrow. SPIZELLA SOCIALIS 

 ARIZONA. Abundant summer resident; breeds from base 

 of foothills to 10,000 feet. 



561. Clay-colored sparrow. SPIZELLA PALLIDA. Sum- 

 mer resident ; not uncommon ; scattered over State east of 

 mountains. 



562. Brewer's sparrow. SPIZELLA BREWERI. Summer 

 resident ; not uncommon ; breeds from plains to 8,000 feet. 



566. White-winged junco. JUNCO AIKENI. Common win- 

 ter resident ; on plains and 8,000 feet up in the mountains. 



567. Slate-colored junco. JUNCO HYEMALIS. Winter 

 resident ; not common ; not found above 8,000 feet. 



567b. Shufeldt's junco. JUNCO HYEMALIS CONNECTENS. 

 Abundant winter resident ; most common in southern part 

 of the State ; not uncommon elsewhere. 



567.1. Montana junco. JUNCO MONTANUS. Winter vis- 

 itor ; not uncommon. 



568. Fink-sided junco. JUNCO MEARNSI. Common 

 winter resident; plentiful at base of foothills in winter; 

 in spring ascend to 10,000 feet ; then leaves the State for 

 the North. 



568.1. Ridgway's junco. JUNCO ANNECTENS. Rare win- 

 ter visitor ; one record. 



569. Gray -headed junco. JUNCO CANICEPS. Abundant 

 resident; breeds from 7,500 to 12,000 feet; sometimes 

 rears three broods. 



570a. Red-backed junco. JUNCO PH^ONOTUS DORSALIS. 

 Rare migrant ; abundant just south of State. 



573a. Desert sparrow. AMPHISPIZA BILINEATA DESERTI- 



