Grønstøl, Gaute, Ole Langeland Myking, Terje Lislevand, and Ingvar Byrkjedal. “Plasma Testosterone Levels of Incubating Female Northern Lapwings Vanellus Vanellus”. Ornis Norvegica 30 (January 1, 2007): 124–126. Accessed April 25, 2024. https://boap.uib.no/index.php/ornis/article/view/176.