Seagulls are no more aggressive than normal, according to Birdwatch Ireland.
It follows reports of the birds injuring people, stealing food from children and attacking lambs.
There have been a number of changes to their food sources in recent years, including the operation of rubbish dumps, once a rich food supply for the gulls.
Dr Stephen Newton of Birdwatch Ireland says its only a small minority that will actively try to take food from humans.
"It's only a small minority that are brave enough to grab food out of a person's hand," he said.
"I know from my own experience that a lot of them will certainly watch you if you're eating a sandwich or whatever, and they're hoping, like a pet dog or whatever, that you're going to throw them a crust or something off the plate.
"But one or two of them say: 'Why wait?' and just jump up there on the park bench."