1. Afton AD, Paulus SL (1992) Incubation and brood care in waterfowl. In: Batt BDJ, Afton AD, Anderson MG, Ankney CD, Jonson DH, Kadlec JA, Krapu GL (eds) The ecology and management of breeding waterfowl. University of Minnesota Press, Saint Paul, pp 62?108
2. Aldrich TW, Raveling DG (1983) Effects of experience and body weight on behaviour of Canada geese. Auk 100: 670?679
3. Andersson M (1978) Optimal egg shape in waders. Ornis Fenn 55: 105?109
4. Ankney CD, Afton AD (1988) Bioenergetics of breeding northern shovelers: diet, nutrition reserves, clutch size, and incubation. Condor 90: 459?472
5. Ankney CD, MacInnes CD (1978) Nutrient reserves and reproductive performance of female lesser snow geese. Auk 95: 459?471