Up until recently, our knowledge of seabirds has been mostly restricted to studies and monitoring carried out at their breeding colonies. As many seabirds spend more of their life out at sea than at the colonies, there is more about seabirds that we don't know, than we do. However, with advances in modern technoology, scientists are now able to find out more about where the birds go when away from the colonies, and its fascinating stuff. Springwatch viewers will be aware of the tagging of arctic terns on the Farne Islands, and look what has been discovered by the Alderney Wildlife Trust during their work with gannets. Liza.