Swallow-tailed Gull Creagrus furcatus Genovesa (Tower Island)

The swallow-tailed gull is as beautiful as it is unusual. It is endemic to the Galapagos and completely nocturnal in its feeding habits. The white markings on its bill are visible in the dark for hungry chicks to locate food. These gulls leave for the cooer water of the Humboldt Current off Peru but return to Galapagos to breed.

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