The decrease is because of the loss of nesting habitat and lack of food availability, the RSPB says.

They are the sound of our seaside, and can often be seen stealing a pasty, a sandwich or some chips.

Seagulls. But, love them or loathe them, they are in decline, according to wildlife experts.

While the birds may appear to be thriving, they are on the red list - the highest level - for British bird species of concern, because their population has dropped by 72% in 55 years.