The RSPCA says 236 guillemots, 17 razor bills and a single herring gull are being treated at West Hatch. The society said the vast majority of the sea birds were rescued from Chesil Beach in Dorset but others have come from the Isle of Wight and Cornwall:
We just do not know what this substance is. It is white, odourless and globular, like a silicone sealer. The best way I can think to describe it is 'sticky Vaseline'. The numbers of the birds coming in have been growing and sadly there were quite a few dead birds this morning. We are still down at the beach though collecting and trying to save as many of them as we can. We are expecting this rescue mission to continue through the weekend.
More top news
Selfless Donna Wood from Staffordshire has left her husband and children at home so she can help save lives in Sierra Leone.
From Sierra Leone to Cyprus, 8,500 Christmas boxes were sent out to every serviceman and woman from the UK.
Thousands of people have switched off their Christmas lights as a mark of respect for the victims of the Glasgow bin lorry tragedy.