Medium-sized gull (L 43 cm). Adults differ from other gulls by bleached wings, long, heavy and blood-red bill and pink tinge bellow. Nests in colonies at deltas, marshes, river valleys, beaches and baies. In winter, occurs principally on coastal habitats. Their main food is fishs, crustaceans and insects. The European population is partially resident. Eastern population is migrant.
Reasons for the need for protection/inclusion in annex I
The breeding population in the EU is unlikely to exceed 2,000 pairs. The major threat is loss of nesting habitats due to water pollution through agricultural and industrial wastes. Disturbance is other important problem. Slender-billed Gull is vulnerable by predation and competition with other gulls.
yellow = summer visitor
green = resident
blue = winter visitor
about 1,000 pairs
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