Halupka, Lucyna, Hanna Sztwiertnia, Marta Borowiec, Ewelina Klimczuk, and Bernd Leisler. “Lack of Polygyny in Central European Populations of Reed Warblers Acrocephalus Scirpaceus”. Ornis Fennica 91, no. 3 (September 30, 2014): 187–194. Accessed November 21, 2024. https://ornisfennica.journal.fi/article/view/133855.