How important are nest cavities made by the Three-toed Woodpecker Picoides tridactylus for cavity-nesting forest bird species?

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How important are nest cavities made by the Three-toed Woodpecker Picoides tridactylus for cavity-nesting forest bird species?

Pakkala, Timo; Tiainen, Juha; Piha, Markus; Kouki, Jari (2018)

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