First characterisation and conservation needs of a large maternity colony of lesser horseshoe bats (Rhinolophus hipposideros) in Aljezur, Portugal

Figures & data

Figure 1. 3D planimetry of the maternity roost of lesser horseshoe bat (Rhinolophus hipposideros).

Figure 2. Location of the maternity roost of lesser horseshoe bat (R. hipposideros), walking transect routes with ultrasound bat detectors and locations of their stationary recordings in Vale da Telha, Aljezur taken from June 29 to July 4, 2022.

Figure 3. Female of lesser horseshoe bat (R. hipposideros) with juvenile inside the maternity roost.

Table I. The results of bat counts during emergence and inside the roost.

Date	Emergence count	Juveniles and adults inside the roost	Total
June 30	294	Not counted	–
July 2	366	130 juveniles + ca. 5 adults	501
July 4	384	107 juveniles + ca. 7 adults	498

Figure 4. Light intensity and number of bats emerging over time from the roost on July 2 and 4, 2022.

Figure 5. Temperature and relative humidity variation inside the roost from June 30 to July 4, 2022.