Kouki, J., G. J. Niemi, and A. Rajasärkkä. “Habitat Associations of Breeding Peatland Passerine Species in Eastern Finland”. Ornis Fennica 69, no. 3 (September 30, 1992): 126–140. Accessed April 19, 2025. https://ornisfennica.journal.fi/article/view/133349.