Citation
Furness, R.W., Mable, B., Savory, F., Griffiths, K., Baillie, S.R. & Heubeck, M. 2010. Subspecies status of Common Eiders Somateria mollissima in Shetland based on morphology and DNA. Bird Study 57: 335. doi:10.1080/00063657.2010.481708
