Nearly 100 seabirds, caught up in the latest pollution incident hitting the South West coastline, have been collected.
The majority are guillemots but there are also a couple of razorbills.
Many have been taken to the RSPCA's West Hatch wildlife centre in Taunton where staff are working flat out.
"It's not just immature birds that have been caught in this sticky, fatty substance.
"We have a mix of white-headed juveniles and black-headed mature birds. They are in a much poorer condition than the ones we treated in the first pollution incident."
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South Swindon is a Labour target for this year’s election. The Conservatives won it in 2010 with a majority of 3,544 votes.
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Tewkesbury is considered a safe seat for the Conservatives - they've been the elected party since the constituency was recreated in 1997.