Abstract

• Salingyi is a township in Yinmabin District in the Sagaing Region of Myanmar. The behaviour of Pteropus giganteus was conducted for twelve months; from December 2017 to November 2018. The purposes of this study are to quantify directly the daytime behaviours categories and to know solitary behavioural of roosting bats with relating to ambient temperature. Data collection was conducted clearly visible on a single roost tree purposively sampled for studies of daytime behaviour. Focal sampling and scan sampling were utilized according to Martins and Bateson (2007). The number of individual bats counted in Sizygium jambos colony ranged between a minimum of 174 individuals and maximum of 566 individuals. The diurnal activity patterns consisted of the solitary activities of roosting, sleeping and grooming, stretching and funning. Indian flying foxes were found to sleep most in the early morning (20°C-25°C ) and became active in the afternoon and evening (30°C-35°C). Fanning was more frequently recorded during the afternoon (30°C-35°C) than other time periods in a day. Grooming and wing stretching were increased with ambient temperature (25°C-30°C). The present study indicates that the ambient temperature has a profound effect on the behaviour of Indian flying foxes.