Lislevand, T., I. Byrkjedal, and G. B. Grønstøl. “Dispersal and Age at First Breeding in Norwegian Northern Lapwings (Vanellus Vanellus)”. Ornis Fennica, vol. 86, no. 1, Mar. 2009, pp. 11–17, https://ornisfennica.journal.fi/article/view/133716.