HOGSTAD, O. Feeding frequencies and nest defence of Fieldfares in relation to body size, physical condition and sex of parents. Ornis Norvegica, [S. l.], v. 27, p. 68–72, 2004. DOI: 10.15845/on.v27i0.201. Disponível em: https://boap.uib.no/index.php/ornis/article/view/201. Acesso em: 26 apr. 2024.