Lislevand, Terje, and Jan Helge Kjøstvedt. “Wintering Water Rails Rallus Aquaticus in Aust-Agder County, South Norway”. Ornis Norvegica 28 (January 1, 2005): 118-125. Accessed August 11, 2020. https://boap.uib.no/index.php/ornis/article/view/188.