Abstract
Grey teal (Anas gibberifrons gracilis Buller, 1869) are widely distributed in New Zealand, the greatest concentrations occurring in the South Auckland, Waikato, Hawke's Bay, and Otago districts. Their preferred habitat is shallow freshwater lakes, lagoons, and swamps with extensive marginal cover. The New Zealand population is estimated to be less than 20 000. Grey teal disperse widely in all directions, in some instances for long distances. The composition of flocks changes continually, and pair‐bonds are apparently retained from season to season. There is an almost complete turnover of the population every 4 years. The survival of juveniles in the post‐fledging period is higher for heavier than for light‐weight young. Mortality from hunting is probably additional to the mortality from other causes.
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