The RSPCA has rescued dozens of herring gulls whose plumage was contaminated with food waste in Dorset.
Around 20 gulls were flapping around in Poole unable to fly when the call came into the RSPCA on Friday morning.
At least ten of the birds died and attempts were being made to rescue the remainder.
RSPCA inspector Graham Hammond said: “The gulls seem to be covered in a brown sandy coloured substance.
“We think they may have flown into a big tank containing waste animal fats.”