596. =Black-headed grosbeak.= ZAMELODIA MELANOCEPHALA. Common summer
resident; breeds from plains to 8,500 feet; has been seen at 10,000
feet.

597a. =Western blue grosbeak.= GUIRACA CAERULEA LAZULA. Summer resident;
not uncommon locally; southern part of State; author saw one pair at
Colorado Springs.

598. =Indigo bunting.= CYANOSPIZA CYANEA. Rare summer visitor; range,
farther east.

599. =Lazuli bunting.= CYANOSPIZA AMOENA. Abundant summer resident;
does not breed far up in the mountains, but has been taken at 9,100
feet.

604. =Dickcissel.= SPIZA AMERICANA. Rare summer resident; only on plains
and in foothills.

605. =Lark bunting.= CALAMOSPIZA MELANOCORYS. Abundant summer resident;
very plentiful on the plains; sometimes breeds as far up in mountains as
9,000 feet.

607. =Louisiana tanager.= PIRANGA LUDOVICIANA. Common summer resident;
in migration common on the plains, but breeds from 6,000 to 10,000 feet.

608. =Scarlet tanager.= PIRANGA ERYTHROMELAS. Rare migrant.

610a. =Cooper's tanager.= PIRANGA RUBRA COOPERI. Rare or accidental
summer visitor; abundant in New Mexico and Arizona; only one record for
Colorado.

611. =Purple martin.= PROGNE SUBIS. Summer resident; local; rare in
eastern, quite common in western part of the State.

612. =Cliff-swallow.= PETROCHELIDON LUNIFRONS. Abundant summer resident;
breeds everywhere from plains to 10,000 feet; nests on cliffs and
beneath eaves.

613. =Barn swallow.= HIRUNDO ERYTHROGASTER. Common summer resident;
breeds from plains to 10,000 feet.

614. =Tree swallow.= TACHYCINETA BICOLOR. Summer resident; not uncommon;
breeds occasionally on the plains; more frequently in mountains up to
10,000 feet.

615. =Violet-green swallow.= TACHYCINETA THALASSINA. Summer resident;
abundant locally; a few breed on plains; more commonly from 6,000 to
10,500 feet.

616. =Bank swallow.= CLIVICOLA RIPARIA. Rare summer resident; rarest
Colorado swallow; from plains to foothills.

617. =Rough-winged swallow.= STELGIDOPTERYX SERRIPENNIS. Summer
resident; not uncommon; breeds below 7,500 feet.

618. =Bohemian waxwing.= AMPELIS GARRULUS. Winter resident; not
uncommon; breeds north of the United States.

619. =Cedar waxwing.= AMPELIS CEDRORUM. Resident; not common; breeds
from plains to about 9,000 feet.

621. =Northern shrike.= LANIUS BOREALIS. Common winter resident; on its
return from the North in October it first appears above timber-line,
then descends to the pl