Veistola, S., Lehikoinen, E., & Eeva, T. (1997). Weather and breeding success at high latitudes-the Pied Flycatcher Ficedula hypoleuca and the Siberian Tit Parus cinctus. Ornis Fennica, 74(2), 89–98. Retrieved from https://ornisfennica.journal.fi/article/view/133461