December 2014 – vol. 107, issue 12, pp 765–769 By Stuart Murray, Sarah Wanless and Mike Harris Abstract An aerial survey of the Northern Gannet Morus bassanus colony on the Bass Rock in 2014 found 75,259 Apparently Occupied Sites, a 24% increase since 2009. The Bass Rock has now overtaken St Kilda and Bonaventure Island to become the world's largest Northern Gannet colony. However, recent planning consent for four large offshore windfarms co... This article is only available to registered users.To read more, please log in or purchase a subscription.