Bats prefer constant temperature and disturbance free environment. Such conditions are most often found in caves, potholes or other underground spaces, such as abandoned mines. The most common bat species using underground roosts in Romania are horseshoe bats (genus Rhinolophus), greater mouse-eared bat (Myotis myotis), lesser mouse-eared bat (Myotis blythii), Schreiber’s bat (Miniopterus schreibersii) and the Barbastelle (Barbastella barbastellus). Below is a modest photo selection about bat colonies in underground roosts from Romania. The photos were taken during the research and monitoring of Romanian bats, but usually bats should not be disturbed by photographing them, especially not without a concrete scientific reason, or without proper permits to carry out the activity.
