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Tropical Parula: Small warbler with blue-gray upperparts, black mask, yellow chin, throat, breast, and upper belly with a diffused orange breast band, white lower belly, undertail coverts. Blue-gray wings have white bars. Lack of a white eye ring and dark mask set it apart from the Northern Parula.
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Tree Swallow: Medium-sized swallow with iridescent blue-green upperparts and white underparts. The wings are dark gray and tail is dark and forked. Black bill, legs and feet. Swift, graceful flight, alternates slow, deep wing beats with short or long glides. Turns back sharply on insects it passes.
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