The northern gannet (Morus bassanus) is a seabird, the largest species of the gannet family, Sulidae. It is native to the coasts of the Atlantic Ocean, breeding in Western Europe and North America. The sexes are similar in appearance. The adult northern gannet has a mainly white streamlined body with a long neck, long and slender wings. It is 87–100 cm (34–39 in) long with a 170–180 cm (67–71 in) wingspan. The head and nape have a buff tinge that is more prominent in breeding season, and the wings are edged with dark brown - black feathers. The long pointed bill is blue - grey, contrasting with black bare skin around the mouth and eyes. Juveniles are mostly grey - brown, becoming increasingly white in the five years it takes them to reach maturity.
Nesting takes place in colonies on both sides of the north Atlantic, the largest of which are at Bass Rock (75,000 pairs as of 2014 ), St Kilda (60,000 pairs as of 2013) and Ailsa Craig (33,000 pairs as of 2014 ) in Scotland, Grassholm in Wales, and Bonaventure Island (60,000 pairs in 2009) off the coast of Quebec. Its breeding range has extended northward and eastward, colonies being established on Russia 's Kola Peninsula in 1995 and Bear Island, southernmost island of Svalbard, in 2011.
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