Mangrove Swallow - Frank Pali Photography

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Mangrove Swallow (Tachycineta albilinea)

The adult mangrove swallow has iridescent blue-green upperparts, white underparts, rump, and undertail- and wing-coverts, and blackish tail and flight feathers. The feathers transition from its most green when fresh to blue with wear. The white underparts sometimes have faint, dark shaft streaks.