W. Meissner and L. Pilacka, “Sex identification of adult Dunlins Calidris alpina alpina migrating in autumn through Baltic region”, Ornis Fenn, vol. 85, no. 4, pp. 135–139, Dec. 2008, Accessed: Dec. 04, 2025. [Online]. Available: https://ornisfennica.journal.fi/article/view/133714