Bat House with Slate Exterior

Bat House photos and pictures here please.

Re: Mason Bees

Postby Dave Miller » Fri May 22, 2009 11:07 am

Dave Miller wrote:Speaking of bees/wasps, have you ever made or used a nest for solitary bees (e.g. mason bees)?  I just made a couple from teasel stems.

FYI the mason bees laid their eggs in the teasel stems over the last few weeks: http://outdoors.webshots.com/slideshow/571474975jXnIlf

I think we may start placing teasel (or bamboo) stem bundles like these at the refuge next year. This is an easy, kid-friendly project which really helps out native bees.

Recall, honey bees are not native to the Americas. Also since honey bees are experiencing "Colony Collapse Disorder", the native bees are even more important for pollination and thus plant (and crop) survival.

Many native bees use 1) small holes in dead wood, or 2) plant stems to lay their eggs. Since there aren't a lot of dead trees left standing any more, they have a tough time finding places to lay their eggs.
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6/14 Status + Bat Quiz

Postby Dave Miller » Wed Jun 17, 2009 3:21 am

On 6/14/09 we had a grand opening ceremony for the new trail at the refuge. A number of us volunteers manned info stations along the trail. I offered to host a station on bats & bat houses.

After a brief introduction to bat houses (we were standing right next to the east house), I gave people a pop quiz: http://www.refugestewards.org/files/bats/BatQuiz.pdf

I was surprised at how many people completed the whole thing. I gave them the answers after they had put down theirs. People seemed to really enjoy it. Many were hesitant at first, but once they got started almost everyone really got into it. It led to a lot of good Q&A, which was my ultimate goal. As you might expect for such an event, most people were nature lovers (mostly birders) but there was still a lot of guessing going on.

It is laid out to be printed 2-up, double sided. Thus one sheet of paper yields two half-sheet quizzes, double-sided. Let me know if you'd like the original to customize for your bats.

Here is the program for the event: http://www.refugestewards.org/files/Ste ... %202up.pdf (also laid out 2-up)

I also checked the bat houses since I knew people would ask if there were bats in the house. I did not see any bats but there were droppings below the house so they have been using it. It is possible that they were in the nursery, whIch I cannot see into. I have not had a chance to do an exit count.

The wasps continue to work on their nests. I think I am going to knock them out since they are taking up quite a bit of space.

West house:

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East house. Note how the wasp eggs in one nest seem to reflect the flash - weird!

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Finally, as I was comparing my photos over the last few months it occurred to me that it would be really smart to put the bat house ID on the bottom of one of the sides so I could easily tell which house it was in the photo (I am planning to put more houses at the refuges). I think I am going to mark the crevices as well, since I often zoom way in on the photo and it is easy to forget which crevice I am looking at. Is there a standard for crevice numbering? If not I think I will call crevice 1 the crevice closest to the back.
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Re: Bat House with Slate Exterior

Postby Dave Miller » Tue Jun 30, 2009 1:15 pm

Checked the houses yesterday 6/29/09. I brought along a long skinny pole to knock out wasp nests if there were no bats present. The west house was empty, and I got the wasp nests out without making them too upset with me. The east house also appeared to be empty, but as I was getting the last wasp nests out, to my surprise a bat came flying out of the house. I thought I had checked my photos really well but apparently not quite well enough. I will be more careful in the future. I am certain that I did not harm the bat since he was in a spot that the pole could not reach. Also he seemed to be flying just fine. I just hope I did not spook him from using the house again. I left immediately after he flew out, so hopefully he came right back.

East house. The bat is in crevice 1, at the very top of the photo. One of the baffle boards has split from the board below. He was above the split board.
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West house. Note how the wood continues to darken. Note also the grass which is now taller than me (and I am 6'3"). This is a non-native invasive grass called reed canarygrass.
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Re: Bat House with Slate Exterior

Postby Terry Lobdell » Tue Jun 30, 2009 10:30 pm

Dave, I've got to rig up something to knock my wasp nests out too.........I think Kent uses sections of conduit that he couples together.......
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Re: Bat House with Slate Exterior

Postby Dave Miller » Mon Aug 24, 2009 2:01 am

Checked my bat houses on the refuge on Saturday and was pleased to find that our bat population has quadrupled to four! There were two bats in each of the two houses. I know that compared to others here, four bats is nothing but around here it seems to be much harder to attract a colony.

Here's a photo of the east house. The bats are in the lower right corner. Note that one of them is yawning!

Dave

Image
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Re: Bat House with Slate Exterior

Postby Dave Miller » Wed Sep 02, 2009 6:30 pm

Six bats in total today:

East house - 5 bats:

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West house - 1 bat:

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Re: Bat House with Slate Exterior

Postby Erik » Thu Sep 03, 2009 5:45 am

Hi Dave,

thats great news. Numbers are going up!
Are these all little brown bats?

greetings, Erik
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Re: Bat House with Slate Exterior

Postby Dave Miller » Thu Sep 03, 2009 11:01 am

Erik wrote:Hi Dave,

thats great news. Numbers are going up!
Are these all little brown bats?

greetings, Erik

Yes I am pretty sure these are all little browns.

There was quite a swarm of wasps just below the house. I think the wasps are at the peak of their activity right now.
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Re: Bat House with Slate Exterior

Postby Cheryl » Mon Sep 28, 2009 12:58 am

Dave Miller wrote: The bats are in the lower right corner. Note that one of them is yawning!
Awwww!! Cute!! ^_^
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Re: Bat House with Slate Exterior

Postby Terry Lobdell » Mon Sep 28, 2009 2:15 pm

It is very cool to see a bat yawning............they remind me of dogs and cats the way they yawn, stretch and groom themselves especially in the afternoon when they become more active.......Whenever I do a talk on bats, I describe them this way..........Based on people's facial expressions I immediately see attitudes change when they realize bats are just like any other mammal.........and actually have traits much like dogs and cats.........
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Re: Bat House with Slate Exterior

Postby Joe Spencer » Mon Sep 28, 2009 5:44 pm

Fantastic news on the increase! Congrats Dave! This area just seemed so conducive to occupation. We'll look forward to more good news next year hopefully since WNS has not spread to the far west yet. :mrgreen:
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Re: Bat House with Slate Exterior

Postby Dave Miller » Mon Mar 01, 2010 6:15 pm

This morning I finally got around to clearing out the paper wasp & mud dauber nests before the bats return from hibernation.

I tweaked my technique a little. Last year I had two problems:

1. A few of the wasps went down my neck and stung me.
2. I broke the stick that I was using to clear out the nests.

This year I made the following changes to my procedure:
1. Took photos of the crevices, and looked very carefully at the photos to ensure that no bats were present (panning & zooming on the camera display). I did have a flashlight with me but it is really hard to see in the crevices during the day, even with a flashlight.
2. Used a stiff plastic planting stake instead of a wooden stake to scrape out the nests. Worked great.
3. Wore safety glasses to keep wasps & junk out of my eyes.
4. Wore the hood of my coat to keep things from falling down my neck.
5. Tightened my sleeves to keep things from falling up my sleeves.

Of course it would be smarter to put the ladder off to the upwind side, not directly under the house, but due to the ground slope, other logs, etc. I have to place the ladder directly under the houses, thus everything rains down on me as I knock it loose. Fortunately it was fairly breezy so most of the wasps & material blew away. But still there were wasps bouncing off my arms & head.

I noticed that a number of the slats have come unglued either from the little blocks or from each other. I kind of expected this to happen. I am tweaking my design such that the slats are attached only at the top, and thus can expand and contract. I have enough materials to build three more houses but haven't had a chance to put them together yet.

Here are some before and after photos.

West house, before cleaning. In the center top you can see mud dauber nests, in the center bottom are a bunch of paper wasps.
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After cleaning.
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East house, before cleaning.
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East house, after cleaning.
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Re: Bat House with Slate Exterior

Postby Dave Miller » Wed Jun 02, 2010 2:45 pm

Was out at the refuge on 5/24, no bats yet. Around here they seem to start using the houses in June.

The paper wasps seem to have a preference for the outermost (southern-exposed) crevice. Guess they like the warmth from the slate or something.

East House:
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West House:
Image
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Re: Bat House with Slate Exterior

Postby cloudman75 » Thu Jun 03, 2010 12:18 am

Great photos Dave. I have not quite mastered good close up shots inside the bat houses, but luck up now and then.
Also a boy scout is requesting some info on the bat discussion and lives in NW Washington State. I posted a couple of sites but don't know what bats you have there in your area. My pups are growing fast now that it's hot here in GA.
Any bats in your other locations Yet?

Frank
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Re: Bat House with Slate Exterior

Postby Dave Miller » Fri Jun 25, 2010 7:31 pm

I checked the houses on 6/23. There were two bats in the east house, none in the west house. As far as I can tell, my bats seem to show up in June and leave in October. Although I was talking with someone who has a maternity colony in their shake roof, she said hers arrive in April and leave in August.

West house:
The wax coating has done a great job preserving the wood. Both houses have been up for 2 years.
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East house:
One of the two bats was crawling around while I was taking pictures:
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