Avian flu has been confirmed in Northern Gannets found dead on the coast off Bass Rock - the world's largest colony of Northern Gannets. The UK Department for Environment Food & Rural Affairs tested a small number of birds which were among hundreds found dead along the East Lothian coast. Bass Rock, in the Firth of Forth, Scotland, is normally home to 150,000 gannets, one of Britain's largest sea birds. The Scottish Seabird Centre told the BBC it felt "powerless" watching the disease spread across the colony. Usually packed with the gannets in their breeding season, the rock looks much less like the usual 'blanket of snow' - which is the timeless scene every April to September. Vox-pop with the Seabird Centre Chief Executive Susan Davies.