Brown Long-eared bat Identifying bats in the hand Natterer's Bat Surveyors On Site Soprano pipistrelle
Title "BATS & The Millennium Link"

BAT FACTS

In order to survive bats need a variety of roosts that they can use
throughout the year for different purposes.

Daubenton's Bat

Roost Monitoring

A core objective of BaTML was to locate, protect and monitor any bat roosts found within the survey area. The directional information obtained from the Habitat Use Profiling Model helped us to establish the likely locations of bat roosts. We were able to begin to develop a picture of where we thought the major roost sites are. As importantly we were also able to eliminate long stretches of canal as probably not holding a significant roost. It should be noted, however, that all sections of the canal are used by foraging/commuting bats.

Our work involved various methods and areas of research which, when brought together, helped us build a much stronger picture as to how the bats in this area are interacting with their habitat.

We were involved with the following areas of study, sometimes in conjunction with other researchers who had similar areas of interest:-Harp Trap in place over roost entrance - Union Canal 2003

  • Harp Trapping bats as they leave their roost, thus allowing bats to be properly identified along with gathering additional data.
  • Ringing of bats in order to establish longer-term information about individuals, including foraging behaviour and roost usage.
  • Radio Tracking Daubenton's bats in order to find new roosting locations.

We discovered a number of previously unknown roosts that have now been protected. As a result of this activity we have also been able to show that there are at least 5 species of bat present in the area, all of which have been found roosting.

 

Species Of Bat

Number Of
Known Roosts
(inc New Ones)

Estimated Number Of Individual Bats
Using Roosts

Recorded During Echolocation Surveys

Soprano pipistrelle

7 (4)

2000

YES

Bandit pipistrelle

2 (2)

60

YES

Daubenton’s

6 (5)

300

YES

Natterer’s

2 (2)

5

NO

Brown Long-eared

2 (2)

3

NO

 

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