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Sirkiä, S., Nikula, A., Helle, P., Lindén, H., Norrdahl, K., Suorsa, P. and Valkeajärvi, P. 2011. Contemporary mature forest cover does not explain the persistence of Capercaillie (Tetrao urogallus) lekking areas in Finland. Ornis Fennica. 88, 4 (Dec. 2011), 208–216. DOI:https://doi.org/10.51812/of.133784.