QUESTIONS & ANSWERSAsk BCM a Question
Do I attach plastic mesh to all inside surfaces?
The only mesh we can advocate is "pet screen" material. This seems to be very tough and resists shredding from bat claws. Don't use metal. Generally however, it is easier and better for the long term to avoid mesh. Scratch all interior surfaces and landing plate area manually with a utility knife.
Should I paint the inside of my bat house?
No need to paint -all- of the insides. Use black spray paint to darken the bottom few inches of the baffles -after- the bat house is constructed. This cuts down on the light reflected up into the bat house from the bottom. You don't really want bats hanging out on paint, so no need to paint all the insides of the bat house.
1) When is the best time to put a bat house up. I'm looking to do one upstate new york (palatine bridge). Is it too late for this year. 2) What radius do the bats hunt from the bat house. 3) How far away does a water source have to be.
Hi anytime is good to install a bat house, but in northern states ~October thru ~March bats generally don't use bat houses. So, installing in the winter means the bat house just sits out in the elements an extra winter. Gulf Coast states, TX, NM, AZ, and CA will have possible bat use year-round at lower elevations.Â Bats may forage up to a few miles from the roost, but some species travel further... 20-60 miles! It's better to have freshwater within 1/4 mile of the roost, although this can also be simply a swimming pool.
What type of wood is this? I live in WI and want to make sure its heavy duty enough for our weather.
All of our bat bouses are yellow pine plywood, with the exteriors being 1/2''. Regardless of what region you are in, all wooden bat houses should be painted (black is fine for WI). In addition all bat houses will fail sooner or later where the roof meets the back. Consider bending/ attaching metal flashing (found locally) over the roof and this lip and painting black for the longest life.
What is the difference in number of chambers, Why would you need a 3 chamber over say a single chamber? Thank You
Hello Michael- statistically when bat house occupancy nationwide was researched some 15-20 years ago, multi-chamber bat houses always became occupied sooner and overall were more successful than single chamber bat houses. Only when a single chamber bat house was placed on the sunny side of a building did they hold their own with other models. We presume this has to do with the larger bat houses having more mass and therefore able to stay warmer longer into the night, when on a post. So single chamber bat houses are inexpensive, and possibly a good option if you are starting out and have a good mounting location like on a sunny building, or if you are targeting FL Bonneted Bats (which is what they seem to prefer). We tend to suggest mounting someplace away from people traffic and to get a sunny location that's usually on a post, and so the multi-chambers work well in more situations. And of course the multi-chambers allow for more bats, and the baffles at the top create more of a roost opportunity not found in the single chamber.