The weights of some southern African Anatidae.
Dean, W.R.J. and Skead, D.M. 1979. The weights of some southern African Anatidae. Wildfowl, 30: 114–117.
Weights of male and female Cape Shelduck Tadorna cana, Yellow-billed Duck Anas undulata, Red-billed Teal A. erythrorhyncha and Southern Pochard Netta erythrophthalma were taken at Barberspan, South Africa, from January 1972 to December 1976. There were significant differences in mean weights between sexes and between adults and juveniles. Weights did not vary markedly during the year. The first 3 species progressively lost weight during the flightless molt and gained immediately the molt has been completed. There were insufficient data for flightless Southern Pochard.