CHECK-LIST OF COLORADO BIRDS 331 



season ; then gathers in large flocks ; wandering up to 

 10,000 feet. 



494'. Bobolink. Dolichonvx orvzivorus. Rare sum- 

 mer visitor. 



4-95. Co-wbird. Moi.othrus ater. Common summer 

 resident ; breeds from plains to about 8,000 feet ; author 

 saw several in South Park. 



497. Yellow-headed blackbird. Xanthocephalus xan- 

 THOCEPHALUs. Couimon summer resident ; breeds in suit- 

 able places on the plains and in mountain parks. 



4-98. Red-winged blackbird. Agelaius phceniceus. 

 Common summer resident ; breeds mostly below 7,500 

 feet, though occasionally ascends to 9,000. 



501b. Western meadow^-lark. Sturnella magna neg- 

 LECTA. Abundant summer resident. 



506. Orchard oriole. Icterus spurius. Summer vis- 

 itor ; rare, if not accidental. 



507. Baltimore oriole. Icterus galbula. Marked 

 as a rare summer resident, though no record of 

 nesting. 



508. Bullock's oriole. Icterus bullocki. Abundant 

 summer resident ; breeds on plains and in mountain regions 

 below 10,000 feet. 



509. Rusty blackbird. Scolecophagus carolinus. 

 Migrant ; rare, if not accidental ; two records. 



510. Brewer's blackbird. Scolecophagus cyanocepha- 

 Lus. Abundant summer resident. 



511b. Bronzed grackle. Quiscalus quiscula ^neus. 

 Summer resident ; not uncommon locally ; comes only to 

 eastern base of mountains. 



514a. Western evening grosbeak. Coccothraustes 



