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Royal Tern: Large tern, pale gray upperparts; white face, neck, and underparts. Head has spiky, black crest and cap, and heavy, bright orange bill. Wings are black-tipped above and black-edged below; tail is deeply forked. Legs and feet are black. Hovers before plunge diving for prey.
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Rufous-capped Warbler: Small warbler with olive-green upperparts, bright yellow throat and upper breast, and white belly. Head has rufous crown and cheek patch, and white eyebrow. Bill is black and the tail is long and olive-gray. It likes to hide in dense undergrowth.
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Red-flanked Bluetail: Small thrush with blue upperparts, head, and tail. The belly and throat are white, flanks are orange-brown, and breast has gray wash. Very active bird. Hops on ground while bobbing tail up and down. Forages on ground and in trees for various insects and berries.
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Ringed Kingfisher: Largest kingfisher in the Western Hemisphere. Blue-gray upperparts, rufous underparts, white underwing and undertail coverts, blue-gray head with ragged crest, long heavy black bill, white chin extends into a white collar. Gray legs, feet. High direct flight on choppy wing beats.
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Rivoli's Hummingbird: Large hummingbird of Mexican highlands, occurs in limited areas of southwest U.S. Appears very dark green overall, in good light may show blue-green to green throat, purple forehead, gray vent, small but prominent white spot behind eye; tail is all dark. Black legs, feet.
Rivoli's Hummingbird is a new name for the Magnificent Hummingbird. It was split into Rivoli's and Talamanca Hummingbird, the latter is found in the cloudforests of Costa Rica and western Panama.
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Roseate Tern: White below with slight, variable pinkish cast visible in good light; pale gray above with black cap, nape and deeply forked tail that projects well beyond wingtips at rest. Bill mostly black with some red at base; legs and feet are red-orange. Graceful, direct flight.
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