Cheaper black colored-backed gulls Larus fuscus try average-size of, long-stayed seabirds you to definitely move so you’re able to varied wintering countries

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Cheaper black colored-backed gulls Larus fuscus try average-size of, long-stayed seabirds you to definitely move so you’re able to varied wintering countries One nest usually include somebody between short-point migrants you to definitely are regional and only move to cold weather roosting internet fifty kilometer away, to international much time-range migrants traveling thousands of kilometres