Bat roost monitoring, including natural roosts (such as caves, rock shelters, trees etc.) as well as artificial roosts (mines, tunnels, roofs, stone cabins etc.). It is the simple protocol for following bat populations, mainly cave-dwelling, such as rhinolophid bats (Rhinolophus sp.), the Schreiber's Bent-winged bat (Miniopterus schreibersii) and (Myotis sp.), that are otherwise difficult to detect.
Throughout the monitoring of bat populations in roosts, we can extrapolate the population trends of these species, and thus prevent the local extinctions caused by negative effects of human activities on the landscape. For this monitoring, the Natural Science Museum of Granollers adapts the protocol to the specific characteristics of each roost.