Clutch size and breeding success of Tengmalm`s Owl Aegolius funereus in natural cavities and nest-boxes
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Korpimäki, E. (1984). Clutch size and breeding success of Tengmalm`s Owl Aegolius funereus in natural cavities and nest-boxes. Ornis Fennica, 61(3), 80–83. Hämtad från https://ornisfennica.journal.fi/article/view/133151