A group of seagulls is called a colony, contrary to a popular belief that it is called a flock. Before seagulls are old enough to breed, they form nursery flocks, which are closely monitored by several of the adult males.
While congregating in their groups or colonies, seagulls often mimic the behavior of one another. These behaviors include stamping their feet to imitate the sound of rainfall. They do this in an attempt to trick worms into migrating to the surface of the ground, where they can easily feed on them. Seagulls are also very good parents, often taking turns sitting on the eggs and protecting and feeding their young.