Part 27

404. =Williamson's sapsucker.= SPHYRAPICUS THYROIDEUS. Common summer resident; breeds from 5,000 feet to upper limits of the pines; range higher in the southern part of the State than in the northern.

405a. =Northern pileated woodpecker.= CEOPHLOEUS PILEATUS ABIETICOLA. Resident; very rare; only probably identified.

406. =Red-headed woodpecker.= MELANERPES ERYTHROCEPHALUS. Common summer resident; breeds from plains to 10,000 feet; late spring arrival; same form in the East and West.

408. =Lewis's woodpecker.= MELANERPES TORQUATUS. Common resident; characteristic bird of the foothills; sometimes seen as high as 10,000 feet in southern Colorado; probably does not breed above 9,000 feet.

409. =Red-bellied woodpecker.= MELANERPES CAROLINUS. Summer visitor; rare, if not accidental; eastern and southern species, not occurring regularly west of central Kansas.

412a. =Northern flicker.= COLAPTES AURATUS LUTEUS. Rare migrant; range extends only to foothills; no record of its breeding.

413. =Red-shafted flicker.= COLAPTES CAFER. Abundant summer resident; breeds from plains to 12,000 feet; almost as plentiful at its highest range as on the plains; early spring arrival; a few winter in the State.

418. =Poor-will.= PHALÆNOPTILUS NUTTALLII. Common summer resident; breeds from plains to 8,000 feet; has been noted up to 10,000 feet.

418a. =Frosted poor-will.= PHALÆNOPTILUS NUTTALLII NITIDUS. Rare summer resident; few typical nitidus taken; a more southern variety.

420a. =Western nighthawk.= CHORDEILES VIRGINIANUS HENRYI. Abundant summer resident; breeds on the plains and up to about 11,000 feet; in fall ranges up to 12,000 feet; most common on plains and in foothills.

422. =Black swift.= CYPSELOIDES NIGER BOREALIS. Summer resident; abundant locally; southwestern part of the State; breeds from 10,000 to 12,000 feet, and ranges up to 13,000 feet.

425. =White-throated swift.= AERONAUTES MELANOLEUCUS. Summer resident; not uncommon locally; breeds in inaccessible rocks from 6,000 to 12,000 feet, if not higher; most common in southern part of the State.

429. =Black-chinned humming-bird.= TROCHILUS ALEXANDRI. Summer resident; local; only in southwestern part of the State, and below 6,000 feet.

432. =Broad-tailed humming-bird.= SELASPHORUS PLATYCERCUS. Common summer resident; Colorado's most common hummer; breeds from foothills to 11,000 feet; ranges 2,000 feet above timber-line in summer.

433. =Rufous humming-bird.= SELASPHORUS RUFUS. Summer resident; local; a western species, coming into southwestern Colorado, where it breeds from 7,000 to 10,000 feet, and ranges in summer several thousand feet higher; a few records east of the range.

436. =Calliope humming-bird.= STELLULA CALLIOPE. Summer visitor; rare or accidental; but two records, one near Breckenridge at an altitude of 9,500 feet; western species.

443. =Scissor-tailed flycatcher.= MILVULUS FORFICATUS. Summer visitor; rare or accidental; but one record; southern range, and more eastern.

444. =Kingbird.= TYRANNUS TYRANNUS. Common summer resident; occurs only on plains and in foothills up to 6,000 feet; same form as the eastern kingbird.

447. =Arkansas kingbird.= TYRANNUS VERTICALIS. Common summer resident; more common in eastern than western part of the State; fond of the plains and foothills, yet breeds as high as 8,000 feet.

448. =Cassin's kingbird.= TYRANNUS VOCIFERANS. Common summer resident; breeds on plains and up to 9,000 feet in mountains; occurs throughout the State.

454. =Ash-throated flycatcher.= MYIARCHUS CINERASCENS. Rare summer resident; western species, coming east to western edge of plains.

455a. =Olivaceous flycatcher.= MYIARCHUS LAWRENCEI OLIVASCENS. Summer visitor, rare, if not accidental; a southern species; taken once in Colorado.

456. =Phoebe.= SAYORNIS PHOEBE. Rare summer visitor; comes west to eastern border of the State.

457. =Say's phoebe.= SAYORNIS SAYA. Common summer resident; most common on the plains; occurs on both sides of the range; the author found it a little above Malta, at Glenwood, and in South Park.

459. =Olive-sided flycatcher.= CONTOPUS BOREALIS. Common summer resident; breeds only in the mountains, from 7,000 to 12,000 feet.

462. =Western wood pewee.= CONTOPUS RICHARDSONII. Common summer resident; most common in breeding season from 7,000 to 11,000 feet.

464. =Western flycatcher.= EMPIDONAX DIFFICILIS. Common summer resident; breeds from plains to 10,000 feet, but most common in upper part of its range.

466. =Traill's flycatcher.= EMPIDONAX TRAILLII. Fairly common summer resident; most common on the plains, but occurs in mountains up to 8,000 feet; breeds throughout its Colorado range.