Mikkonen, A. V., and E. J. Mikkonen. “Observations of Postnuptial Moult in a Red-Breasted Flycatcher Ficedula Parva”. Ornis Fennica 49, no. 1 (March 31, 1972): 20–21. Accessed November 23, 2024. https://ornisfennica.journal.fi/article/view/132837.