I’ve got a few bat house questions. (Yes, I posted earlier in “bat help” section but this question is specific to bat houses, so posting here.)
A family member made a bat house for us. We hung it and have 8 adult bats and also pups – as of this spring. From looking at guano, etc., pretty sure we have big brown bats.
The bat house is 21 inches tall, backboard is 26 inches. Width is 20 inches. Depth is 5 inches with three chambers and the chambers are about 1” to 1/1/4 inch wide. Plywood was used for dividing the chambers and they are lined with quarter inch hardware cloth. Both houses are painted a medium-dark green, military green. Both houses have the ¼ inch horizontal vent across the front, about 5 inches above the base of the house. The house is about 15 feet above the ground.
The only place we could get six hours of sun on the bat house AND have it high enough above the ground was to mount it was on the sw corner of our home. The bat house gets afternoon sun from about 1-2 p.m. until the sun sets, but the top of the house (the roof part of the house) is under the eaves and shaded during the hottest part of the day.
My family member just gave us another bat house, made exactly the same. The only place to hang it is on same side of the house as the other bat house. We could hang it close to the first bat house where it would get equal sun/heat or we could move it further north along that wall so it would be shaded a bit by a tree, probably from about 6-9 p.m. but would still have sun in the hottest part of the day. From what I’ve read, it would be nice to offer a ‘cooler’ house, especially for big browns. Does anyone have ideas or suggestions about placement for the second house?
Since the one house has bats (as of early May this year) should we leave it as is or take it down in the fall and paint it a lighter color to help with afternoon sun temperatures?
If we put the second bat house in full afternoon sun like the first one, should we add holes or somehow made another vent so that house is cooler than the first house?
And, last, should we hang the second house now, or wait until next spring?
Thanks, and sure appreciate any and all suggestions.