Sorjonen J. Long-term constancy of two rain-call dialects of the Chaffinch Fringilla coelebs in Finnish and Russian Karelia. A consequence of site fidelity?. Ornis Fenn [Internet]. 2001 Jul. 1 [cited 2026 Apr. 4];78(2):73–82. Available from: https://ornisfennica.journal.fi/article/view/133549