A. O. Hume, 1877,
Closely related to S. albifrons, S. antillarum, S. superciliaris and S. lorata. Sometimes considered conspecific with S. albifrons, or made a subspecies of form sinensis when latter treated as a full species. Monotypic.
Breeds in Red Sea (N to at least Yanbu) S to Socotra and S Somalia and off Saudi Arabia and Oman, along coasts of Persian Gulf and locally E to NW India; Sri Lanka (mainly in NW and possibly E); large numbers throughout year at Addu Atoll (Maldives), where probably breeds in Apr with other terns, and probably also on Amirantes and possibly Seychelles. Winters from Red Sea S to Tanzania and Madagascar and E to India (where details of winter range unclear), and probably in Seychelles and off Malay Peninsula.
Food and feeding
Status and conservation
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