Kelley said the report showed that seagulls were more likely to be associated with residential areas using simple food and that they were "more accessible to human food dropped or laid down" .
Tony Whitehead, from the Royal Society for the Protection of Birds (RSPB), said the results of the experiment were "interesting" .
"The unique thing I noticed was the bird's ability to observe," says Whitehead.
He said that people should stop feeding birds because they are "getting used to this" and causing people to hate gulls. "They cannot distinguish between the food given and the food placed , " Whitehead said. "If we can minimize this conflict, the image of seagulls could be improved."
According to BBCNews