What is the seagull's niche?

Gulls (of which there are many different species) are just some of the birds which live in general near the sea. Although they eat fish, they will also eat lots of other food items. In the UK they are often drawn to rubbish dumps inland for their food.

They are not really sea birds as they have to have fresh water to drink - unlike birds such as the Fulmar wihich are adapted to salt water.