Guillemots dived into the sea, sometimes picking up oil-coated pieces of seaweed for their nests.

In Scotland, there has been a fall in the breeding success of seabirds such as guillemots, puffins and kittiwakes, as warming sea temperatures affect the food chain.

The striking drop in numbers round British coasts of such seabirds as arctic terns, kittiwakes, guillemots and puffins is probably a result of the disappearance of sand eels.