They will count how bodies in a survey for the Royal Society for the Protection of Birds. It described last year's breeding season as disastrous.

The information gathered will be used to find out whether the birds have died from starvation, from oil pollution or from natural causes.

The survey started 30 years ago looking for the effects of oil pollution.

This year the RSPB is looking at future problems for seabirds, and working with the government to safeguard their future.