Tjörn

Date of Observation
Sighting Details
What did you observe?
Additional question - Can you give further details on the observation e.g. behavior, habitat etc:

Fly in front of our summerhouse in the evening when dark falls. 

How many bats did you see?
11-25
How did you identify them
Visually Identified Bat
How did you hear about BatMapper?: -radio -tv -newspaper -online news -social media - other (please give details)
Radio