Byrkjedal, I., G. B. Grønstøl, J. E. Hafsmo, and T. Lislevand. “Chick Punishment and Chick Adoption in Northern Lapwings”. Ornis Fennica 77, no. 2 (July 1, 2000): 89–92. Accessed April 9, 2025. https://ornisfennica.journal.fi/article/view/133531.