Mediterranean Gull (L. melanocephalus)
Mediterranean Gull adult PHK1 August 01 2010, Le Portel / Boulogne-sur-Mer, NW France. Picture: Jean-Michel Sauvage.
Ringing data: ringed on 10 May 2008 as adult (>3CY) at CYBUKÓW POLDER, ROSZKOW-KRZYŻANOWICE, POLAND (49.58 N18.17).
V20.07.2008BOULOGNE-SUR-MER, PAS-DE-CALAIS, FRANCE50.43 N01.37 ECAVALIER, F.
From June to September, a complete moult takes place, into so-called "adult winter" plumage. The head pattern resembles the pattern in first winter birds, with blackish mask behind the eye. The mantle, scapulars, tertials and all the wing-coverts are replaced for plain pearl-grey feathers. The secondaries are completely white. The adult primaries are shiny pearly-grey, flashing white at a distance. There is a black line along the outer-web of P10 (and sometimes on P9 as well). Secondaries, under-wing and tail all completely white. The bare part coloration in adult plumage: Iris brown, orbital ring red or orangey-red, the bill red or orangey-red with a black bill-band and a yellowish tip and the legs dull reddish or dark. There is some variation in 3cy and 4cy wing-tip patterns.