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Sula leucogaster
Large, gull-like seabird, mostly dark brown with white underwing coverts, belly, and vent. Blue-gray bill. Yellow legs and feet. Plunge dives from 30-50 feet. Juvenile is brown overall; belly ranges from mottled brown and white to mostly dark. Sharp line still visible between darker chest and lighter belly. Underwing coverts are pale. Bare parts generally dull gray.
Ranguana Caye on Belize Barrier Reef.
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