CHECK-LIST OF COLORADO BIRDS 331 



season ; then gathers in large flocks ; wandering up to 

 10,000 feet. 



494. Bobolink. DOLICHONYX ORYZIVORUS. Rare sum- 

 mer visitor. 



495. Cowbird. MOLOTHRUS 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. Common summer resident ; breeds in suit- 

 able places on the plains and in mountain parks. 



498. Red-winged blackbird. AGELAIUS PHOENICEUS. 

 Common summer resident; breeds mostly below 7,500 

 feet, though occasionally ascends to 9^000. 



50 Ib. 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. 



5 lib. Bronzed grackle. QUISCALUS QUISCULA ^ENEUS. 

 Summer resident; not uncommon locally; comes only to 

 eastern base of mountains. 



514a. Western evening grosbeak. COCCOTHRAUSTES 



