BYRKJEDAL, I. Social behaviour of wintering Great Northern Divers Gavia immer in relation to age categories. Ornis Norvegica, [S. l.], v. 34, p. 10–16, 2011. DOI: 10.15845/on.v34i0.124. Disponível em: https://boap.uib.no/index.php/ornis/article/view/124. Acesso em: 26 apr. 2024.