A large wetland on the Tyrrhenian coast, close to the village of Castglione della Pescaia, that was formerly freshwater but which is now becoming brackish due to seawater inflow. The main habitats are large reedbeds, open water, and a small coniferous wood. On the southern and eastern borders are present large areas of cultivated fields on reclaimed land. The main land-use is nature conservation.
An important site for wintering and migrating waterbirds (more than 15,000), for breeding Botaurus stellaris, and for Numenius tenuirostris in winter and on passage. There is a heronry in the wood. Species of global conservation concern that do not meet IBA criteria: Aythya nyroca (max. 2, winter).
BirdLife International (2020) Important Bird Areas factsheet: Diaccia Botrona. Downloaded from http://www.birdlife.org on 27/09/2020.