4 1/2 -5" (11-13 cm). A very large hummingbird. Male green above, dusky gray below, with bright blue gorget. Blue-black tail with broad white corners on outer tail feathers. Female closely resembles f... read more
14-16" (36-41 cm). A small brown duck with pale blue shoulder patches. Male has gray head and white crescent in front of eye. Female mottled brown, similar to female Cinnamon Teal but with obscure pat... read more
4 1/2" (11 cm). Sexes similar, mostly bright yellow with blue-gray wings, 2 white wing bars, and black line through eye. Greenish back and tail.... read more
4 3/4" (12 cm). Brown above, white below. Male has striking blue throat and breast with rusty red "star" in the middle; black, white, and red bands across breast; white neck stripe and eyebrow. Female... read more
Males 16-17" (41-43 cm); females 12-13" (30-33 cm). Tail very long and keel-shaped. Male black, iridescent blue on back and breast; yellow or brown eyes. Female smaller, brown with paler breast. Commo... read more
Bobolink Dolichonyx oryzivorus Last Name: Bobolink
6-8" (15-20 cm). Breeding male largely black, with white rump and back, dull yellow nape. Female and winter male rich buff-yellow, streaked on back and crown. Short, finch-like bill. Female Red-winged... read more
Bohemian Waxwing Bombycilla garrulus Last Name: Waxwing, Bohemian
7 1/2 -8 1/2" (19-22 cm). A sleek, gray-brown, crested bird. Similar to Cedar Waxwing but larger, grayer, and with conspicuous white wing patches and rusty (not white) undertail coverts.... read more
Bonaparte's Gull Chroicocephalus philadelphia Last Name: Gull, Bonaparte's
12-14" (30-36 cm). A small delicate gull, silvery gray above, with conspicuous white, wedge-shaped patches on leading edge of outer wing. Head black in breeding adults, white in winter with dark spot ... read more
5-5 1/2" (13-14 cm). Similar to Black-capped Chickadee, but crown and back brown, flanks rufous.... read more
Boreal Owl Aegolius funereus Last Name: Owl, Boreal
9-12" (23-30 cm). W. 24" (61 cm). A rare, robin-sized owl without ear tufts. Brown with white spots above, rust-streaked below. Similar to Northern Saw-whet Owl but larger, with dark borders on facial... read more
5 1/4-6 1/4" (13-16 cm). Similar to Cassin's Sparrow but more slender, browner, and less boldly streaked on upperparts, with a more conspicuous eyebrow and a slightly less conical bill.... read more
Brambling Fringilla montifringilla Last Name: Brambling
5 3/4-6" (14.5-15.5 cm). Breeding male has black head and back, tawny-orange breast and shoulders, spotted flanks, white belly; in fresh fall plumage, the head, back and chest are flecked with buff. J... read more
Brandt's Cormorant Phalacrocorax penicillatus Last Name: Cormorant, Brandt's
33-35" (84-89 cm). A solidly built cormorant, thick-necked and large-headed, black with little gloss. Breeding birds have bright cobalt-blue throat pouch bordered with yellow, and slender white plumes... read more
22-30" (56-76 cm). Similar to Canada Goose but smaller, shorter-necked, darker, and lacking conspicuous white cheek patch. Dark brown above with black head and neck; white collar on neck, less conspic... read more
Brewer's Blackbird Euphagus cyanocephalus Last Name: Blackbird, Brewer's
8-10" (20-25 cm). Robin-sized. Male is solid black with purplish-blue iridescent head and yellow eyes. Female is gray with dark eyes. Similar to Rusty Blackbird, but male Rusty has faint green reflect... read more
5" (13 cm). Light brown upperparts with black streaks; unmarked pale underparts. Resembles Clay-colored Sparrow, but has brown crown, finely streaked with black. Well-defined darker ear patch bordered... read more
