501b. =Western meadow-lark.= STURNELLA MAGNA NEGLECTA. Abundant summer resident.
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 aeNEUS. Summer resident; not uncommon locally; comes only to eastern base of mountains.
514a. =Western evening grosbeak.= COCCOTHRAUSTES VESPERTINUS MONTa.n.u.s.
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. =Ca.s.sin"s purple finch.= CARPODACUS Ca.s.sINI. Common resident; winters from plains to 7,000 feet; breeds from that alt.i.tude to 10,000 feet.
519. =House finch.= CARPODACUS MEXICa.n.u.s FRONTALIS. Abundant resident.
521a. =Mexican crossbill.= LOXIA CURVIROSTRA STRICKLANDI. Resident; not uncommon; has been seen in summer at 11,000 feet; breeds in mountains, perhaps in winter like its eastern ant.i.type.
522. =White-winged crossbill.= LOXIA LEUCOPTERA. Rare winter visitor; one record.
524. =Gray-crowned leucosticte.= LEUCOSTICTE TEPHROCOTIS. Rare winter visitor; western species.
524a. =Hepburn"s leucosticte.= LEUCOSTICTE TEPHROCOTIS LITTORALIS. Rare winter visitor; summers in the North.
525. =Black leucosticte.= LEUCOSTICTE ATRATA. Rare winter visitor; summer range unknown; winters in the Rockies.
526. =Brown-capped leucosticte.= LEUCOSTICTE AUSTRALIS. This little bird and the white-tailed ptarmigan have the highest summer range of any Colorado birds.
528. =Redpoll.= ACANTHIS LINARIA. Common winter resident; lives from plains to 10,000 feet.
528b. =Greater redpoll.= ACANTHIS LINARIA ROSTRATA. Rare or accidental winter visitor; one record.
529. =American goldfinch.= ASTRAGALINUS TRISTIS. Resident; quite common in summer; sometimes reaches 10,000 feet.
529a. =Western goldfinch.= ASTRAGALINUS TRISTIS PALLIDUS. Migrant; probably common; added by Mr. Aiken.
530. =Arkansas goldfinch.= ASTRAGALINUS PSALTRIA. Common summer resident; breeds from plains to over 9,000 feet.
530a. =Arizona goldfinch.= ASTRAGALINUS PSALTRIA ARIZONae. Summer resident; not common.
530b. =Mexican goldfinch.= ASTRAGALINUS PSALTRIA MEXICa.n.u.s. Rare, but believed to be a summer resident at Trinidad.
533. =Pine siskin.= SPINUS PINUS. Common resident; breeding range from plains to timber-line.
000. =English sparrow.= Pa.s.sER DOMESTICUS. Rapidly increasing in numbers; has settled at points west of the range.
534. =Snowflake.= Pa.s.sERINA NIVALIS. Rare winter visitor; one record west of the range; several east.
536a. =Alaskan longspur.= CALCARIUS LAPPONICUS ALASCENSIS. Common winter resident; breeds far north.
538. =Chestnut-collared longspur.= CALCARIUS ORNATUS. Rare summer resident; winter resident, not common; common in migration.
539. =McCown"s longspur.= RHYNCOPHANES MCCOWNII. Common winter resident, dwelling on the plains.
540a. =Western vesper sparrow.= POOCaeTES GRAMINEUS CONFINIS. Abundant summer resident; breeds from plains to 12,000 feet.
542b. =Western savanna sparrow.= AMMODRAMUS SANDWICHENSIS ALAUDINUS.
Common summer resident; breeds from base of foothills to almost 12,000 feet.
545. =Baird"s sparrow.= AMMODRAMUS BAIRDII. Migrant; not common; a number taken east of the range, and one west.
546a. =Western gra.s.shopper sparrow.= AMMODRAMUS SAVANNARUM PERPALLIDUS.
Not uncommon summer resident; breeds on plains and in lower foothills.
552a. =Western lark sparrow.= CHONDESTES GRAMMACUS STRIGATUS. Common summer resident; breeds on plains and in mountain parks to 10,000 feet.
553. =Harris"s sparrow.= ZONOTRICHIA QUERULA. Rare migrant; abundant migrant in Kansas.
554. =White-crowned sparrow.= ZONOTRICHIA LEUCOPHRYS. Abundant summer resident.
554a. =Intermediate sparrow.= ZONOTRICHIA LEUCOPHRYS GAMBELII. Common migrant, both east and west of the range; breeds north of the United States.
557. =Golden-crowned sparrow.= ZONOTRICHIA CORONATA. Accidental winter visitor; Pacific Coast species; breeds in Alaska.
558. =White-throated sparrow.= ZONOTRICHIA ALBICOLLIS. Rare migrant; but three records.
559a. =Western tree sparrow.= SPIZELLA MONTICOLA OCHRACEA. Common winter resident; mostly on plains and in lower mountains.
560. =Chipping sparrow.= SPIZELLA SOCIALIS. Rare summer resident; common in migration; goes as far west as base of the mountains.
560a. =Western chipping sparrow.= SPIZELLA SOCIALIS ARIZONae. Abundant summer resident; breeds from base of foothills to 10,000 feet.
561. =Clay-colored sparrow.= SPIZELLA PALLIDA. Summer 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 winter 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.