Date of Observation
Roost Details
Give specific details on the location e.g. is it in the attic, under roof tiles, inside the building, in a tree hole, underneath bark of a tree:

They seem to live in a big old maple tree between Svartviksslingan 25 in Minneberg in Stockholm, Sweden and Ulvsundasjön (Mälaren) which is right next to the building.

Where is the Roost
How long has it been used by Bats
>10 Years
How do you know it's a Bat Roost
Seen Bat Flying
Other (How do you know it's a Bat Roost)
I see bats flying around outside my window every spring, and sometimes other times of the year. I think they live in a big old maple tree near my window. They seem to be catching insects over the lake, which is right outside. Especially near sunset and especially in the spring.
Do you know what Species use the Roost

Don't know. I usually see one or several.

How did you identify them
Visually Identified Bat
Do you have sound files of recorded Bats
How did you hear about BatMapper?: -radio -tv -newspaper -online news -social media - other (please give details)
radio -tv -newspaper -online news -social media - other