Head, neck, rump and tail white. Back and upperwings grey. Conspicuous white leading edge to wing, as outer five primaries mainly white, with black tips. Undeparts white, with rosy bloom on breast and belly in fresh plumage. bill and legs dark red to blackish red. Iris yellowish white, with red eye-ring.
Readily distinguished from L. ridibundus by more angular profile, with smaller head, longer bill and flat-sloping forehead.
Listen to the sound of Slender-billed Gull
Copyright remark: Most sounds derived from xeno-canto
|wingspan min.:||100||cm||wingspan max.:||110||cm|
|size min.:||42||cm||size max.:||44||cm|
|incubation min.:||21||days||incubation max.:||23||days|
|fledging min.:||0||days||fledging max.:||23||days|
Utilizes islands, sand spits and beaches, or meadows, grassland, brackish or freshwater marshes of broad river deltas, occasionally in the marine littoral sone.
Almost entirely coastal outside breeding season, feeding in shallow inshore waters and at salt-pans, usually avoid harbours.
Engages in aerial dipping to surface, plunging from about one meter, surface dipping and upending. Feeds in intertidal zone, probing in mud with bill. aerial foraging on swarming insects noted. Scavenges far less than most gulls, hence usually does not congregate near villages, but in winter joins other gulls at sewage outfalls.
Larus genei breeds locally in coastal areas of the Mediterranean and Black Seas and
in Turkey, with Europe accounting for less than half of its global breeding range. Its
European breeding population is relatively small (<56,000 pairs), but increased
substantially between 1970-1990. Although the species declined in Russia during
1990-2000, it was stable or increased elsewhere in Europe, and hence remained stable
overall. Nevertheless, more than 90% of the European breeding population occurs at
just 10 sites.