As part of a Best 2.0+ project funded by the European Commission and led by the Groupe Chiroptères Océan Indien in partnership with the Terres Australes et Antarctiques Françaises, a study of the chiropteran communities present on 3 of the Éparses islands has been carried out with the aim of acquiring the knowledge necessary for their conservation.

An initial field phase, based on the proven presence of the MauritiusTaphozous (Taphozous mauritianus), was carried out on Grande Glorieuse, complemented by a passive acoustic survey carried out on the islands of Tromelin, Europa and Grande Glorieuse.

The results show that two species of chiropteran were identified on Grande Glorieuse, unlike on Europa and Tromelin, where no bats were found. Based on these results, recommendations for monitoring, management and awareness-raising have been drawn up for each of the islands.