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Mark Kiser
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| Joined: | Tue Mar 12th, 2002 |
| Location: | Austin, Texas USA |
| Posts: | 58 |
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Posted: Thu Jan 6th, 2005 08:15 pm |
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A new version of The Bat House Builder's Handbook is now available from BCI and the University of Texas Press. The new book has 2-chamber rocket box plans, along with new information and recommendations.
Also watch the Bat House Project web pages at http://www.batcon.org/bhra in the coming months for new updates.
Cheers,
Mark and Selena Kiser
Bat House Project
BCI
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Joe Spencer
Administrator
| Joined: | Mon Feb 11th, 2002 |
| Location: | Massachusetts USA |
| Posts: | 530 |
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Posted: Sat Jan 8th, 2005 12:34 am |
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Awesome Mark. Ordering soon! 
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Night_Flyer
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| Joined: | Thu Apr 7th, 2005 |
| Location: | Ringgold Ga |
| Posts: | 9 |
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Posted: Fri Apr 8th, 2005 03:19 am |
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| I ordered this book last week and it came pronto! I have just put up a three chamber house that I built about a year and a half ago. The reason for the delay was I wanted to make dang sure I hung it in a good place. The book is awsome and I plan on making a Rocket box this weekend. I was very excited about the rocket Box as it seemed easier to make. Excellent book.
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BatMan
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| Joined: | Wed Jul 28th, 2004 |
| Location: | Florida USA |
| Posts: | 134 |
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Posted: Sat Apr 9th, 2005 12:34 am |
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I have my copy ! :thumbup: Very informative.
I think my next project will be the rocket box from the plans in the book.
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Night_Flyer
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| Joined: | Thu Apr 7th, 2005 |
| Location: | Ringgold Ga |
| Posts: | 9 |
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Posted: Sat Apr 9th, 2005 01:03 pm |
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| I have just completed bat box # 2, and i have only one more coat of paint to put on it. I used concrete board 1/2" for the for the baffle boards and 3/4" plywood pieces for the spacers. It has five chambers with the interior baffles 30" tall and the interior roost space is 19.5" wide. It is all done with 3/4" plywood. What is different about this house is I used 3/4" spacers at the top and bottom of the sides so the sides of the box are roost space as well. This increased my interior width from 18" to 19.5" and allows the bats to move around the sides of the baffles. I saw the first bat of the year last night. I wish it would call my new bat house home. I am not sure what time of the year the mexican free tails move through the area. Extreme north west Georgia just below Chattanooga. Also, is there a mathmatical formula for estimating how many bats a house will hold once completed.
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Mark Kiser
Member
| Joined: | Tue Mar 12th, 2002 |
| Location: | Austin, Texas USA |
| Posts: | 58 |
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Posted: Mon May 16th, 2005 07:13 pm |
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Roost capacity is a controversial subject, as different species seem to pack in at different densities. For free-tailed bats, Brian Keeley at BCI came up with the estimate of 50 bats per square foot of roost space (this was in 3/4 inch to 1 1/4 inch bridge crevices). We often use the more conservative estimate of 50 bats per linear roost space (not taking the height of the chamber into account). So for a typical four-chamber nursery house, we usually say about 200 bats.
Cal Butchkoski in PA used an even more conservative estimate, about 35 little brown bats per 3/4 inch deep x 20-inch wide chamber. His big 7-chamber box, 36 inches tall x 24 inches wide was rated at 250 bats, based on personal experience.
Hope this helps.
Mark and Selena Kiser
BCI
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