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Gray Bunting Breeding Male: Medium sized, dark gray bunting with black streaks on back, shoulders, and underparts. Undertail coverts are white. Heavy, pink bill with black tip, culmen. Pink legs and feet. Short flights, alternates rapid wing beats with periods of wings pulled to sides. Secretive.
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Gray-cheeked Thrush: Small thrush (minimus), with olive-brown upperparts, buff-brown breast with brown spots, and white or buff belly. Gray eye-ring is indistinct. Upper mandible is black with pale base, while lower mandible is yellow with black tip. Tail and rump have rust-brown wash.
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Golden-crowned Kinglet: Very small, warbler-like bird, olive-green to gray upperparts and pale breast. Head has bright orange crown patch bordered with yellow and black, white eyebrows and black bill. Tail is short and wings have two bars. Weak fluttering flight on shallow wing beats.
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Greater Prairie-Chicke: Medium grouse, barred with brown and buff (or white). Yellow-orange eye combs. Orange air sacs on both sides of the neck inflate during courtship display; long feathers on back of neck also raised during displays. Short, dark brown tail, legs are feathered to the toes.
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Greater Shearwater: Large shearwater, scaled, gray-brown upperparts, white underparts, brown markings on belly. Dark cap contrasts with white face. Tail is dark above with conspicuous white rump band and gray below. Dark, hooked bill. Pink legs, feet. Flies on deep wing beats followed by long glide.
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Gunnison Sage-Grouse: Recognized as a species in 2000. Large grouse, mottled gray-brown overall with white breast, black face, chin, throat, bib and belly. Black bill. Yellow eye combs and long black filoplumes on neck show when courting. Brown tail feathers are long and pointed, with white bands.
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Gull-billed Tern: Lightest North American tern. Black cap that extends below eyes, down nape; pale gray upperparts that are darker at the wingtips; short, stout black bill and black legs, feet; long wings with very long outer primaries. Direct flight with graceful, shallow wing beats.
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Great Black-backed Gull: World's largest gull. White head, black upperparts, white underparts, large yellow bill with red spot on lower mandible, pale-eyed with red orbital ring, pink legs, feet. Flight is direct and powerful with deep, slow wing beats. Soars on thermals or updrafts.
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Gray Hawk: Small tropical hawk with uniformly pale gray upperparts and fine white barring on underparts. Cere is yellow. Tail is thickly banded black and white. Wing tips are rounded. Legs and feet are yellow. Bouyant, graceful flap-and-glide flight, soars on thermals often but not to great heights.
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Great Knot: Medium sandpiper with brown upperparts showing dark spots on crown and back, and white underparts with black spots on breast and sides. Bill is short and black. Wings show bright patch of orange-brown on coverts. Legs and feet are gray-green. Swift direct flight with rapid wing beats.
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Green Sandpiper: Medium sandpiper with pale-spotted, dark gray-brown back and rump, white underparts with dark streaks on neck, upper breast, sides. Head is dark and eye-ring is white. Tail is white with fine dark spotting at tip. Bill, legs, feet are olive-green. Swift flight with rapid wing beats.
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Greater Scaup: Large diving duck with glossy green-black head, white sides and belly, black tail, neck and breast, barred gray flanks and back. Eyes are yellow. Bill is blue-gray with a black tip. Feeds on insects, plants, vertebrates and mollusks. Rapid direct flight with strong rapid wing beats.
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Gray Vireo: Medium-sized vireo with gray upperparts, faint white spectacles, dark iris, and dull white underparts. The wings are dark gray with indistinct white bars. The sideways twitching of the tail is unique among vireos and is similar to gnatcatchers. Forages in low undergrowth.
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Golden-fronted Woodpecker: Medium-sized woodpecker with black-and-white barred back and wings, white rump and black tail. Head has golden yellow-orange nape, red cap, small yellow patch at base of upper mandible, and buff-gray face. Underparts are gray-white. Black bill, legs and feet.
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Gilded Flicker: Large woodpecker with dark barred and spotted brown back, brown cap, pale gray face and throat, red moustache stripe, white rump, thick black crescent on upper breast, and black spotted, pale buff underparts. It was named for the gold color of its underwings and tail.
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Great Kiskadee: Large flycatcher with brown upperparts, white head with black cap and eye-line, and bright yellow underparts. Yellow crown patch is usually concealed. Wings and tail are chestnut-brown. Black bill, legs and feet. Slow fluttering direct flight with shallow wing beats.
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Gray Kingbird: Large flycatcher with gray upperparts, black mask, inconspicuous red crown patch, and mostly white underparts with pale yellow wash on belly and undertail coverts. Bill is long and black. Wings and notched tail are dark. Fluttering direct flight on shallow wing beats.
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Gray-headed Chickadee: Medium chickadee with gray-brown back, gray cap, black bib, white cheeks, and white underparts washed with buff-gray on sides and flanks. Wings and tail are gray with white-edged feathers. Formerly called the Siberian Tit, it is the hardiest of all chickadees.
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Gray-streaked Flycatcher: Small flycatcher with gray-brown upperparts and dark streaked white underparts. Tail is short and notched; wings are gray-brown with faint white wing bar. Undertail coverts are white. Face shows white eye-ring and distinct brown malar mark; throat is white. Bill is black.
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Gambel's Quail: Medium quail, gray upperparts and breast, scaled gray nape, black patch on center of abdomen, black head plume, white-bordered black face, cinnamon-brown crown, buff underparts, flanks streaked dark chestnut-brown and white. Alternates several stiff wing beats with short glides.
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Gray-tailed Tattler: Medium sandpiper with gray upperparts and cap, white eyebrow and throat, gray streaked breast, and pale gray underparts. Wings and tail are dark. Legs and feet are yellow. Eats insects and larvae, picks up food in sand and water. Direct flight, quick wing beats.
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Green Kingfisher: Small kingfisher, dark green head, back, and wings, white chin, collar, rufous breast band, white belly with black spots. Black bill is long and straight. Legs and feet are gray. Feeds mostly on small fish taken in dives and aquatic insects, amphibians. Direct flight.
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Gila Woodpecker: Medium woodpecker, black-and-white barred upperparts and central tail feathers, buff-gray neck and underparts. Buff-gray head has a small red cap. Wings have large white patches visible in flight. Its abandoned nesting and roost holes provide shelter for birds, mammals and reptiles.
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Glaucous Gull: Large, white gull with pale gray back. Eyes are yellow. Bill is yellow with red spot on lower mandible. Wings are white-edged and white tipped. Legs and feet are pink. An active predator of seabird nesting colonies. Slow, steady wing beats. Soars on thermals and updrafts.
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Glaucous-winged Gull: Large gull with gray upperparts and white underparts, head, and neck. Eyes are dark. Bill is yellow with red spot on lower mandible. Wings are gray with white edges and spots near the tips. Legs and feet are pink. Powerful direct flight, often soars on thermals.
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Green Heron: Small heron with gray-green upperparts. Head, neck, upper breast are chestnut-brown, belly is paler brown. Head has green-black cap with small crest. Throat is white and neck has white central stripe. Bill is two-toned with dark upper mandible and yellow lower mandible. Direct flight.
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Great Blue Heron: Large, elegant heron with blue-gray back, black sides, and gray-and-white striped belly. Long neck is gray with black-bordered white throat stripe. Head has white face, cap, and black crest. Upper mandible is dark, while lower mandible is yellow. Direct flight on steady wing beats.
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Great Egret: Large, white heron with yellow eyes. Bill is yellow, may appear orange when breeding. Black legs and feet. Long feather plumes extend from the back to beyond the tail during breeding season. Feeds on fish, frogs, insects, snakes and crayfish. Bouyant direct flight on steady wing beats.
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Great Gray Owl: Large owl, dark gray body interspersed with bars and flecks of brown, pale gray, and white. Head is large and without ear tufts. Yellow eyes are relatively small. Bulky appearance when perching due to dense, fluffy plumage, long wings extending past body, and relatively long tail.
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Gyrfalcon: Large northern falcon with three color morphs: dark, white, and gray. Dark morph is dark gray with pale streaks on throat and upper breast. White morph is white with dark spots and markings on wings, nape, and sides. Gray morph is a mix. The eyes, bill, and legs of all morphs are yellow.
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Gray Jay: Medium-sized, fluffy, crestless jay with gray upperparts, paler underparts, and a short bill. Tail is long and white-tipped. Feeds on insects, carrion, refuse, seed, nuts, berries, mice, eggs and young of other birds. Light and bouyant flight on steady wing beats. Glides between perches.
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Garganey: Small dabbling duck with black-streaked, gray upperparts, chestnut-brown mottled face and breast, pale gray flanks. White stripe above eye, running down neck is highly visible. Wings have pale blue shoulder patches and dark green speculum with white borders visible in flight.
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Gadwall: Large dabbling duck with finely barred gray body, black rump and undertail coverts, white belly, and rust-brown shoulders. Head and neck are gray-brown; bill is gray. Wings have black-bordered white speculum most visible in flight. Legs and feet are yellow. Fast direct flight.
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Grasshopper Sparrow: Medium sparrow with brown-streaked upperparts and white underparts. Face, flanks, and breast are plain buff-brown. Head is flat with central white stripe though dark crown. Upper mandible is gray, while lower mandible is yellow. Pink legs and feet. Named for its insectlike song.
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Greater White-fronted Goose: Medium goose with dark-brown body. Underparts are barred and flecked with black; belly and undertail coverts are conspicuously white. Front of face has a white patch. Bill is usually pink. Legs are orange. Steady direct flight with rapid wing beats. Flies in V formation.
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Greater Yellowlegs: Large sandpiper with mottled brown, gray, and white upperparts. Underparts are white with dark streaks, spots. Bill is slightly upturned. Legs are long and bright yellow. Long barred tail and white rump are conspicuous in flight. Swift direct flight, sometimes at great heights.
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Greater Sage Grouse: Largest North American grouse, has scaled gray-brown upperparts, white breast, black throat, bib, and belly, and yellow combs above eyes. Large, white collar-like patch on breast conceals two yellow air sacs displayed during courtship. Tail feathers are long and pointed.
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Gray Flycatcher: Small flycatcher with gray or olive-gray upperparts and pale gray underparts. Eye-ring is white. Upper mandible is dark gray, while lower mandible is pale pink with black tip. Wings are dark with two white bars. The tail is long, dark, and has white edges. Legs and feet are black.
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Greater Pewee: Large, plump flycatcher, olive-gray upperparts, white throat, gray breast, pale yellow belly. Slender crest. Broad, flat bill is two-toned: upper mandible is dark, lower is orange. Wings and tail are dark. Short flights on rapid shallow wing beats. Sallies out to take insects in air.
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Green-winged Teal: Small dabbling duck with pale, gray-barred sides and buff breast with a white bar down the side. Head is chestnut-brown with green ear patch. Bill is dark gray and legs and feet are olive-gray to gray-brown. Speculum is flashy green bordered with brown above and white below.
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Greater Roadrunner: Large, ground-dwelling cuckoo with overall brown, white and buff streaked appearance. Head has a shaggy crest. Face has blue and orange bare patch of skin behind eyes. Tail is long. Eats insects, lizards, snakes, rodents, small birds and fruits and seeds. Can run up to 15 mph.
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Golden-cheeked Warbler: Medium warbler, black upperparts, white underparts with thick black streaks on sides. Head has black cap and throat, bright yellow face, and black eye-line. Wings are dark with two white bars. black bill, legs and feet. The only bird with a breeding range confined to Texas.
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Golden-winged Warbler: Small warbler with gray upperparts and white underparts. Face is white with black mask and throat, and head has a yellow crown. Wings are gray with large yellow patches. Its flight is weak and fluttering, alternates rapid wing beats with periods of wings drawn to its sides.
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Grace's Warbler: Medium flycatching warbler with gray upperparts and black streaks on back and crown. Underparts are white with dark streaks on sides and yellow on throat and breast. Yellow eyebrows turn white behind eyes. Wings are dark with two white bars. Tail is dark with white outer feathers.
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