Observations on the Autumnal Territorial Behaviour of the Great Spotted Woodpecker, Dendrocopos major (L.)
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Pulliainen, E. (1963). Observations on the Autumnal Territorial Behaviour of the Great Spotted Woodpecker, Dendrocopos major (L.). Ornis Fennica, 40(4), 132–139. Hämtad från https://ornisfennica.journal.fi/article/view/132688
