An RSPCA centre in West Hatch, near Taunton, has had to treat almost 30 gulls after they were found passed out or staggering around in an alcohol-fuelled haze.
Other sources report that the seagulls' freaky behaviour could be nothing to do with alcohol, but instead the consumption of flying ants which produce formic acid, a substance that "stupefies" the birds.
RSPCA vet David Couper urged vets to look out for the signs after he treated a number of the gulls at the charity's West Hatch Wildlife Centre in Taunton.
"Drunken" seagulls were rescued by the Royal Society for the Prevention of Cruelty to Animals (RSPCA) after they were found disoriented and confused.
The animal charity has had more than a dozen calls regarding the birds, and has surmised the birds are probably accessing waste from a local brewery or alcohol producer.
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He said the birds had been brought in in recent weeks after being found on beaches across Devon, and a few from Bridport and Lyme Regis in Dorset.
Although some birds have succumbed to the alcohol poisoning the RSPCA say numerous birds have been successfully rescued and released back into the wild following their ordeal.
He believes that instead, the birds are somehow managing to get hold of the by-products produced by a local brewery.
"We took some video of one of the birds who is staggering around and losing his balance just like a person would if they'd had too much to drink". Can be greedy gulls feeding on waste grain from the brewery in this district.
Anyone who has any concerns for the welfare of a bird or any animal can contact the RSPCA's 24-hour helpline on 0300 1234 999.