Kilpi, M., Lindström, K. and Wuorinen, J. D. (1992) “A change in clutch size in the Arctic Tern Sterna paradisaea in the northern Baltic”, Ornis Fennica, 69(2), pp. 88–91. Available at: https://ornisfennica.journal.fi/article/view/133343 (Accessed: 22November2024).