RAPOSEIRA, Helena; HORTA, Pedro; LUÍS, António. Response of predatory birds to varying levels of difficulty in obtaining food. Journal of Zoo and Aquarium Research, [S. l.], v. 1, n. 2, p. 69–72, 2013. DOI: 10.19227/jzar.v1i2.34. Disponível em: https://jzar.org/jzar/article/view/34. Acesso em: 26 apr. 2024.