"Mangrove" Warbler (Yellow Warbler subsp.)

Best at "All Sizes". Portrait of a vagrant male in San Diego, California January 20, 2009.

Thought by some authorities to be a separate species, but not by the AOU. One suspects that the warbler itself is less concerned than are attendant birders.

A native of mangrove swamps from semi-tropical Mexico to northern South America.

Done