HELLEBREKERS WPJ (1962) Oölogy and Nidology communications, 1960-II and 1961: Eggs of Eurasian Wryneck Jynx torquilla and Great Tit Parus major brood by Great Tit in nest box. LIMOSA 35 (1): 157-157.
Eurasian Wryneck Jynx torquilla Great Tit Parus major
