Locally abundant coastal cormorant of Humboldt Current. The species name is linked to the famous guano islands of Peru. Can be seen as singles, but usually seen in flocks, sometimes many thousands feeding, nesting, and roosting in dense masses or commuting in endless streams. Associates readily with pelicans, boobies, other cormorants, and Inca Terns. Adult is handsome with a distinctive “dinner dress” pattern of white extending up into neck and a red patch around the eye. Immature has similar pattern, but is brownish above and the plumage is duller overall.
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