Durinck, J., Christensen, K. D., Skov, H., & Danielsen, F. (1993). Diet of the Common Scoter Melanitta nigra and Velvet Scoter Melanitta fusca wintering in the North Sea. Ornis Fennica, 70(4), 215–218. Retrieved from https://ornisfennica.journal.fi/article/view/133385