DAVIS, Susan E; KLAAS, Erwin E; KOEHLER, Kenneth J. Diurnal time-activity budgets and habitat use of Lesser Snow Geese Anser caerulescens in the middle Missouri River valley during winter and spring. Wildfowl, [S. l.], p. 45–54, 1989. Disponível em: https://tidsskrift.dk/Wildfowl/article/view/154026. Acesso em: 17 dec. 2025.