506. Orchard oriole. Icterus spurius. Summer visitor; 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 cyanocephalus. Abundant summer resident.
511b. Bronzed grackle. Quiscalus quiscula æneus. Summer resident; not uncommon locally; comes only to eastern base of mountains.
514a. Western evening grosbeak. Coccothraustes vespertinus montanus. Resident; found every month of the year; no nests found, but evidently breeds.
515a. Rocky Mountain pine grosbeak. Pinicola enucleator montana. Resident; not uncommon; most common in late summer and fall when most of them are just below timber-line; stragglers descend to foothills and plains.
517. Purple finch. Carpodacus purpureus. Migrant; rare, if not accidental; only one specimen, and that a female.
518. Cassin's purple finch. Carpodacus cassini. Common resident; winters from plains to 7,000 feet; breeds from that altitude to 10,000 feet.