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Fulmar 

The two Fulmars are closely related seabirds occupying the same niche in different oceans. The Northern Fulmar (Fulmarus glacialis) or just Fulmar lives in the north Atlantic and north Pacific, whereas the Southern Fulmar, (Fulmarus glacialoides) is, as its name implies, a bird of the southern oceans. These birds look superficially like gulls, but are unrelated, and are in fact petrels. The northern species is grey and white with a yellow bill, 43–52 cm (17–20 in) in length with a 102–112 cm (40–44 in) wingspan. The southern form is a paler bird with dark wing  tips, 45–50 cm (18–20 in) long, with a 115–120 cm (45–47 in) wingspan.

They are highly pelagic outside the breeding season, like most tubenoses, feeding on fish, oil or offal. Recent studies in the North Sea have shown them especially susceptible to plastic discards. The range of these species increased greatly last century due to the availability of fish offal from commercial fleets, but may contract because of less food from this source and climatic change. The population increase has been especially notable in the British Isles.

Like other petrels, their walking ability is limited, but they are strong fliers, with a stiff wing action quite unlike the gulls. They look bull-necked compared to gulls, and have short stubby bills. 

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