14-15 1/2" (36-39 cm). Larger than Rock Pigeon. Dark gray above; pale gray terminal band on tail. Head and underparts purplish plum, whitening toward extreme lower belly. Adults have narrow white semi... read more

4 3/4-5 1/2" (12-14 cm). Sparrow-sized; our smallest swallow. Brown above, dull white below; breast crossed by distinct brown band; tail notched. Northern Rough-winged Swallow is warmer brown, with du... read more

15-18" (38-46 cm). A large slender shorebird with a long, slightly upturned bill. Breeding adult has barred chestnut underparts, mottled brown upperparts. Fall birds grayish above, whitish below. Simi... read more

18" (46 cm). W. 3' 8" (1.1 m). Crow-sized. Buff-brown above and white below, with heart-shaped face and numerous fine dark dots on white underparts; dark eyes, long legs.... read more

5 3/4-7 3/4" (15-20 cm). Sparrow-sized. Our most familiar swallow, and the only one with a deeply forked tail. Upperparts dark steel-blue, underparts buff, throat and forehead rusty.... read more

25-28" (63.5-71 cm). A small, white-faced goose; back barred with black and gray; crown, eye line, nape, neck, breast, bill, and legs black; primaries dark; underparts white.... read more

20" (51 cm). W. 3' 8" (1.1 m). A large, stocky, dark-eyed owl. Gray-brown, with crossbarring on neck and breast and streaks on belly; no ear tufts. See Spotted Owl.... read more

16 1/2 -20" (42-51 cm). Male has white body, black back, and black-appearing (actually glossed with purple) head. Similar to male Common Goldeneye, but has more black on sides, stubbier bill, and cres... read more

5 1/2" (14 cm). In breeding plumage, male has chestnut cap, throat, and sides; blackish face; conspicuous pale buff patch on side of neck. Upperparts streaked. Females, fall males, and immatures are o... read more

4 3/4 -5" (12-13 cm). Smaller than a sparrow. Dull olive-gray above, whitish below, with faint white eye ring and fainter wing bars. White-eyed Vireo similar but larger, with yellow "spectacles" and w... read more

13" (33 cm). A dove-sized bird, blue-gray above, white below, with bushy crest, dagger-like bill. Male has blue-gray breast band; female similar, but also has chestnut belly band.... read more

9-11" (23-28 cm). Robin-sized. A grayish-brown, short-billed thrasher of desert thickets. Similar to a young Curve-billed Thrasher with a short bill, but smaller, with a shorter tail and more triangul... read more

3 1/2-4 1/4" (9.5-11 cm). Iridescent green above and below, with deep chestnut wings, tail, and rump. Belly chestnut in male only; female belly grayish. Base of lower mandible red.... read more

5 1/2" (14 cm). Gray-brown above, white below, with white eyebrow and long fan-shaped tail tipped with white.... read more

7 1/2". Back, head, wings grayish brown; dark brown spots on pale buffy throat and chest; belly white; tail often rusty reddish contrasting with olive brown back reminiscent of Hermit Thrush; cheeks g... read more

13" (33 cm). Pigeon-sized. In summer, all black with large white wing patch; bright red feet; pointed bill. In winter, the black is largely replaced by white. Murres are larger.... read more