Seagulls live near water, and often near humans, too. Gulls' main diet is fish and other sea life like crabs, mollusks, and clams. But they will eat just about anything, from berries to carrion to "people food".They generally nest in flocks, and have only one mate that they stay with year after year. They build nests out of shallow scrapes on the ground lines with vegetation. Some species of seagulls nest around human dwellings. Cliffs and trees can also sport a gull nest.
Two are three eggs are layed, and incubated for three to five weeks by both parents, who take turns sitting on them. Chicks fledge at three to seven weeks.
Gulls can be generally nasty in behavior, sometimes stealing eggs (which they eat) or chicks (Which they adopt. Or eat.) from each other. They can be pests to humans, too; stealing food, and generally making a nuisance of themselves.
But seagulls are beautiful birds, and no seashore would be complete without one.
source: http://www.suite101.com/content/all-about-seagullsgulls-and-kittiwakes-a124159
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