PÖYSÄ, H. Changes in predator surveillance in a foraging Great Tit Parus major in response to presence and group size of Yellowhammers Emberiza citrinella. Ornis Fennica, [S. l.], v. 62, n. 3, p. 138–140, 1985. Disponível em: https://ornisfennica.journal.fi/article/view/133188. Acesso em: 23 nov. 2024.