During winter and migration periods, the Lesser black-backed gull is the most abundant gull species in Portugal, particularly along the coast. Most gulls feed mainly at sea, and rest on beaches, fishing ports or estuarine areas. But, as well as the Yellow-legged gull, this species uses areas such as landfills, dumps, urban areas, coastal lagoons, reservoirs, wetlands and rice fields to find food. Even if globally, this species seems to be increasing. The Portuguese population is small and considered vulnerable (VU). Lesser black-backed gull breeds regularly in Berlenga Island, although in very small numbers. This colony is thought to be established since the 1980s, and is now made of around 30 couples. There are no significant threats identified nationally, although it can be accidentally caught in fishing gears (nets and longline).