The Loyang Rock

The Loyang Rock is a traditional nesting site for the rare Black-naped Terns (Sterna sumatrana),an oceanic tern, which arrive in March. These birds start roosting on the rock between April to August, before leaving for the South China Sea after. They have a habit of following passing large ships en masse. When a vessel approaches, a great number would shadow the stern. They appear to be attracted to the wake stirred up by the ship’s passing. Could it be that the movement of the large ship forces up benthic or other marine organisms to the surface, thus giving the terns, which do not dive very deeply, easy pickings?

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