“Autumn migration and moult of the Spotted Flycatcher Muscicapa striata and the Pied Flycatcher Ficedula hypoleuca at the Signilskär bird station” (1973) Ornis Fennica, 50(3–4), pp. 134–143. Available at: https://ornisfennica.journal.fi/article/view/132857 (Accessed: 6 November 2025).