In the past, we studied the activities of Asian parti-colored (APC) bats through visual observation, which is very labor intensive. This paper develops an IoT platform called BatTalk to continuously monitor the APC bats population, understand its compositional changes, life history, and environmental factors. With BatTalk, the above visual observations can be achieved with reduced man power and minimal interference to the bat activities. The most important task is to use BatTalk to automate the process to understand APC bats’ regular annual cycle of life history and estimate the percentage of the baby bats born and raised there would return to their original habitat in the coming year. Also, we proposed an inexpensive manner to identify the bat habitats and bat movement paths by identifying the bat’s ultrasonic signal strength and GPS position, and then show the information in a map.