Flocking of male Capercaillie Tetrao urogallus at feeding sites in Ostrobothnia, W Finland
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Pulliainen, E., & Joensuu, O. (1981). Flocking of male Capercaillie Tetrao urogallus at feeding sites in Ostrobothnia, W Finland. Ornis Fennica, 58(3), 131–133. Hämtad från https://ornisfennica.journal.fi/article/view/133075