Seagulls in general may be associated with loud, aggressive food stealing behaviour but herring gulls are currently on the UK's Red List for endangered species.
In Northern Ireland, herring gulls experienced a population increase during the 1950s-1970s, in the Seabird Colony Register census from 1985-1988 there were 17,561 pairs of herring gulls in NI while in a follow-up survey, the Seabird 2000 census, only 722 pairs were recorded.
Ireland has lost large numbers of herring gulls in recent decades and it would seem that the western coasts of Ireland and Scotland have seen the largest declines in herring gull numbers in recent decades.