The Common Gull nests on the ground, both in colonies and as isolated pairs, and has become adept at exploiting artificial nesting sites in built-up areas.
Site: on islands, skerries, rocks and coastal meadows, but also on rooftops, posts and artificial platforms in towns.
Construction: a simple, cup-shaped nest of grass, seaweed and plant material placed directly on the ground.
Breeding: the female usually lays 3 eggs, which are incubated by both parents for 24–27 days, and the young fledge after about five weeks.