Observations on the Autumnal Territorial Behaviour of the Great Spotted Woodpecker, Dendrocopos major (L.)

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