Winter feeding by the Great Tit, Parus major, on eggs of the European pine sawfly, Neodiprion sertifer
Referera så här
Olofsson, E. (1986). Winter feeding by the Great Tit, Parus major, on eggs of the European pine sawfly, Neodiprion sertifer. Ornis Fennica, 63(3), 91–92. Hämtad från https://ornisfennica.journal.fi/article/view/133213
