ORELL, M.; OJANEN, M. Numbers of Starlings Sturnus vulgaris breeding in northern Finland still low in 1978–79. Ornis Fennica, [S. l.], v. 57, n. 3, p. 133–134, 1980. Disponível em: https://ornisfennica.journal.fi/article/view/133046. Acesso em: 20 touko. 2024.