Kalejta-Summers, Bozena, and David Butterfield. “Numbers and Distribution of Wintering Divers, Grebes and Seaducks in the Moray Firth, Scotland, 1998 99-2003 04”. Wildfowl 56 (April 16, 2013): 113–128. Accessed April 15, 2026. https://tidsskrift.dk/Wildfowl/article/view/153967.