Boat-billed Heron (Cochlearius cochlearius)
Linnaeus, 1766. 5 subspecies recognized, here are shown panamensis (Costa Rica) and cochlearius (Brazil).
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Comparison adult-juvenile The first image shows an adult with a clean plumage coloration which exhibits the prominent crest when turning the head. The juvenile, afterwards, is enterely brown, slightly streaked on underparts, with less contrasted crown and lacking the crest.