Part 30

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 ARIZONÆ. 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.

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 visitor; not uncommon.

568. =Pink-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 winter 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 PHÆONOTUS DORSALIS. Rare migrant; abundant just south of State.

573a. =Desert sparrow.= AMPHISPIZA BILINEATA DESERTICOLA. Summer resident; not uncommon locally; found only in southwestern part of the State.

574a. =Sage sparrow.= AMPHISPIZA BELLI NEVADENSIS. Abundant summer resident; common on sage-brush plains of western and southwestern Colorado; ranges as far east as San Luis Park and north to Cheyenne, Wyoming.

581. =Song-sparrow.= MELOSPIZA FASCIATA. Rare migrant; found only at eastern border of State.

581b. =Mountain song-sparrow.= MELOSPIZA FASCIATA MONTANA. Common summer resident; a few remain on plains in mild winters; breeds from plains to 8,000 feet.

583. =Lincoln's sparrow.= MELOSPIZA LINCOLNI. Common summer resident; abundant in migration; breeds from base of foothills to timber-line.

584. =Swamp sparrow.= MELOSPIZA GEORGIANA. Accidental summer visitor; one record.

585c. =Slate-colored sparrow.= PASSERELLA ILIACA SCHISTACEA. Rare summer resident; only three records.

588. =Arctic towhee.= PIPILO MACULATUS ARCTICUS. Winter resident; not uncommon; comes to base of Rocky Mountains in winter; breeds in the North, as far as the Saskatchewan River.

588a. =Spurred towhee.= PIPILO MACULATUS MEGALONYX. Common summer resident; upper limit, 9,000 feet.

591. =Cañon towhee.= PIPILO FUSCUS MESOLEUCUS. Resident; common locally; all records from Arkansas Valley; rare at an altitude of 10,000 feet.

592. =Abert's towhee.= PIPILO ABERTI. Rare summer resident; species abundant in New Mexico and Arizona.

592.1. =Green-tailed towhee.= OREOSPIZA CHLORURA. Common summer resident; melodious songster.