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Cormorant Phalacrocorax carbo L 80-100cm. Dark water bird with heavy, hook-tipped bill. Swims low in water, propelled by large webbed feet. Wings often held outstretched when perched. Sexes are similar. Adult in summer is mainly dark with an oily sheen and black-bordered brownish feathers on wings, and white on thigh and head. Eye is green; skin at base of bill is yellowish. In winter, white feathering is absent. Juvenile has brown upperparts and whitish underparts. Voice Silent except at nest. Status Common, favouring sheltered seas and large freshwater lakes. Breeds colonially.