Seabirds mystery: Wax-like substance examined in Taunton
1 February 2013 Last updated at 11:58 GMT
Wildlife Centre Supervisor Paul Oaten explains what can be done to clean off the waxy substance found on guillemots washed up on the south coast.
Hundreds of seabirds were found on beaches from Sussex to Cornwall on Thursday, many at Portland in Dorset.
Scientists are trying to establish the nature and source of the substance, which may be palm oil.