PHILLIPS, V E; WRIGHT, R M. The differences in behaviour and feeding success of tame Mallard ducklings Anas platyrhynchos in the presence of high and low fish populations at a gravel pit site, with reference to wild brood distribution. Wildfowl, [S. l.], p. 69–74, 1993. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/154701. Acesso em: 17 dec. 2025.