I have seen the blackheaded Gull nesting in Norfolk and what a racket they make you can hear them from miles away, mind you there are a few thousand of them I estimate. Of more interest to this Suffolk site a few years ago we had Fulmars nesting on Bawdesy cliff's. They came back for about four years but in the end their nests got vandalised and they departed, it's a crying shame that people cant leave nature alone to do what it does best, being nature.