Abstract
The aim of the present investigation was to ascertain adrenaline and noradrenaline contents of the adrenal gland as well as blood glucose levels during the seasonal gonadal cycle in both sexes of the Indian Tree Pie Dendrocitta vagabanda. The investigation was carried out once a month throughout the year. The findings revealed that adrenal adrenaline and noradrenaline levels, and blood glucose levels decreased during the breeding phase in both sexes of birds. It is suggested that adrenomedullary hormonal levels are not directly related to the annual gonadal cycle, but that the glycemic level may have some relationship with the gonad in this species.
