Last updated at 07:20

Seabirds covered in mystery goo

Guillemot bird covered in sticky goo

The RSPCA are worried about the return of a mystery sticky substance that's harming seabirds.

12 guillemots have been found washed up on beaches on the south coast of England covered in goo.

Earlier this year hundreds of birds had to be rescued after being found covered in the mystery stuff.

The charity says they're still not sure where the substance is coming from.