BOB GIBBONS / SCIENCE PHOTO LIBRARY BOB GIBBONS / SCIENCE PHOTO LIBRARY
Willet (Catoptrophorus semipalmatus) in winter plumage, feeding at a tide-line. This is a shorebird that wades in shallow water and over mudflats. It uses its long beak to probe for and feed on insects, crustaceans, marine worms, and sometimes plant material. Photographed in the Galapagos Islands.
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