Mortality of maned duck and grey teal due to hunting at Barrenbox Swamp in New South Wales in 1982
was estimated from band returns. Birds were marked a short while before the open season commenced.
The mortality rates were 33.0% in maned duck and 10.9% in grey teal on opening morning, and 41.0%
and 14.3% for the season. The validity of the estimates is discussed. Barrenbox Swamp is a popular
hunting site and a permanent wetland. Hunting mortality at the level recorded for maned duck in this
study could be detrimental to waterfowl during droughts, when populations concentrate on such
permanent waters.