Arctic TernSterna paradisaea

Description
Medium-sized (L 35 cm), very like Common Tern (Sterna hirundo), but has darker red bill and shorter legs. Nesting occurs only on coastal areas: arms of sea, estuaries, beaches. The Arctic Tern breeds colonially , frequently with Common Tern. Feeds largely on small fish. Migrant.

Reasons for the need for protection/inclusion in annex I
The major threats now seem to be the depletion of the stocks of fish due to overfishing and water pollution, disturbances and predation at nesting sites.