Seasonal changes in the population of Mallophaga on Acridotheres tristis.

83.41% specimens of Common Myna were found infested with one to four species of Mallophaga, during the year 1984. Incidence of infestation and the indices were higher during the summer months and lower during winter months. The reasons of seasonal abundance are also discussed. Temperature seems to be one of the factors. The seasonal changes in population were found corresponding to the gonadal cycle of the host.