Status
The Sandwich Tern has an extensive global range estimated at 100,000–1,000,000 million square kilometres km². (0.04–0.38 million square miles). It has a population estimated at 460,000–500,000 individuals. Population trends have not been quantified, but the species is not believed to approach the thresholds for the population decline criterion of the IUCN Red List (i.e., declining more than 30% in ten years or three generations). For these reasons, the species is evaluated as Least Concern.
The Sandwich Tern is among the taxa to which the Agreement on the Conservation of African-Eurasian Migratory Waterbirds (AEWA) applies. Parties to the Agreement are required to engage in a wide range of conservation actions which are describes in a detailed action plan. This plan should address key issues such as species and habitat conservation, management of human activities, research, education, and implementation.
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Winter plumage T. s. acuflavida
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Sandwich Terns sometimes snatch fish off the surface of the water.
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T. s. sandvicensis approaching its waiting offspring with a fish.
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T. s. sandvicensis with common Terns
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In flight, Costa Rica
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