Environment officials in Jersey say an apparent reduction in seagull numbers on the coast is a major concern.
There has been a fall in the number of Seagull nests in town as well
It is six months since an extensive report on the problems caused by Herring Gulls was released.
It recommended up to 400 chicks and eggs could be dealt with by licensed pest controllers when they affect public health.
But now the Environment Department is worried about what seems to be fewer gulls nesting in their natural habitat.
There has also been a fall in the number of nests in town compared to six months ago.
Principal ecologist Mike Freeman said there was not a clear reason for the fall in numbers. He said if levels dropped even more, they may have to re-think the pest control measures.
However, people are being reminded not to feed gulls in St Helier, which can encourage them to scavenge through rubbish.