JOHNSON, I P; SIBLY, R M. Pre-breeding behaviour affects condition, assessed by abdominal profile, and hence breeding success of Canada Geese Branta canadensis. Wildfowl, [S. l.], p. 60–68, 1993. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/154698. Acesso em: 16 dec. 2025.