Pulliainen, E. (1980) “Mid-winter feeding activity of Siberian Tits Parus cinctus and a Great Tit Parus major at a feeding site north of the Arctic Circle”, Ornis Fennica, 57(2), pp. 90–92. Available at: https://ornisfennica.journal.fi/article/view/133040 (Accessed: 26November2024).