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## Garden: landscaping, plants, garden, ponds and pools ⇒ Construction of a shelter, house, birdhouse in Chauves-Souris

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### Re: Construction of a house (hotel) in Chauves-Souris

izentrop wrote:Edit yes, butcher (that's what I understood) and leave only the open bottom, although when they nest in a hollow tree, the question does not arise.

Ah not visibly I still have not been clear enough: the sides I planned to close them in any case, the question is whether it is interesting to leave these "free" cavities inside the shelter...

Thank you for the .pdf it's just a study that was done in my corner!

The type B model is the one I build (with the difference that I do not have 1 space but 3 and that the dimensions are much larger) and this configuration apparently gives good results in the region!

Yapluka!
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### Re: Construction of a house (hotel) in Chauves-Souris

Here is the progress of the day ... I sanded, striated and fixed the partitions in the pallet as well as the front and rear plates ... 100% recover except the screws and brackets ... At the level of spaces we will have :
a) Back: 2 + 2 cm is 2 or 4 cm
b) Central: 2,5 cm
c) Before: 2,5 + 2 cm is 2,5 or 4,5 cm

Our friends will have the choice between 2, 2,5, 4 and 4,5 cm of space + inter-plots spaces ... in short the luxury what!

The + 2 cm is the extra vacuum space when there are no boards in the pallet (look at the last picture to understand)

Chauve_souris_1.jpg (351.11 KIO) Accessed 366 times

Chauve_souris_2.jpg (213.34 KIO) Accessed 366 times

Chauve_souris_3.jpg (151.16 KIO) Accessed 366 times

Chauve_souris_4.jpg (89.85 KIO) Accessed 366 times

With the front and rear plates it's already quite dark at the bottom is the front plate:

Chauve_souris_5.jpg (205.61 KIO) Accessed 366 times

It's going to be tough and heavy... it may be one of the deficiencies of this design: the total weight will exceed the 25-30 kg I think ... so the installation at 4m high will not be obvious and it will provide the fixings accordingly (but I already have an idea ...)

The following tomorrow
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### Re: Construction of a house (hotel) in Chauves-Souris

Except the point on recycling (and maybe the size, see last point ???) I think I have respected these instructions ... for the moment ...

Common house construction and construction problems

Bad house beats are simply flawed from the start. They are often too small overall and contain crevices too large. Sometimes a critical detail is omitted, such as a landing plate. Usually these boxes can not compete with a modern design, even after being upgraded by a creative hobbyist. Bad construction is a different matter, usually the box can be successful after some paint, caulk, extra screws, and extra roughening.

A single chamber box. Bats simply preferred larger structures which offer a wide range of stable temperatures. A tightly built house may be good "starter" box that would be great for giveaways to the general public.
Factory smooth interior crevices. All interior wood must be roughened for bats to readily cling to. Some commercial boxes staple screening to the inside of the box which may eventually fall as condensation and urine rust the staples. A "bat house" seen at a major hardware store has only one groove on the "landing plate"; this is totally unacceptable.
Unprotected roof. Roofs without shingles may not be sufficient, and may not be sufficient.
Nailed together with unsealed seams. This type of box will be broken and separated.
Unpainted, unprotected exterior. Some manufacturers insist on leaving unpainted bat boxes. While in certain areas the natural wood color may be a suitable color, there is no reason for the structure to go unprotected. While cedar is rot resistant, it will warp and separate the seams just as much as any other wood material.
Bad design. Bat research has proceeded to a very fast rate, thanks to the communication between many different hobbyists and biologists across the country. For example, a large open-bottomed house is now preferred over smaller than closed bottom designs which tends to attract more parasites.
Old plans. Bat house plans can be found in a variety of places, which is good. Unfortunately, many posters, books, and flyers have been published here. Frighteningly, this information is still distributed by many reputable sources. A pile of utterly horrid plans were obtained from a state of the art agency and were distributed in a few years ago.
"Recycled" material. Some people build houses of decent design with the lumber of demolished structures in an effort to cut costs. As some pesticides can be used for years.
Unrealistic claims. For example, a seven bedroom house was once observed with nearly 600 bats inside. However, we are only at 300. This is because 600 beats in this size is overcrowded and unhealthy.

In google translates this gives:

Common Problems of Bats Design and Construction

Bad bat house designs are simply flawed from the start. They are often too small overall and contain large crevices. Sometimes a critical detail is omitted, such as a landing pad. Usually, these boxes can not compete with a modern design, even after being updated by a creative lover. Bad construction is a different matter, usually the box can be successful after painting, caulking, extra screws, and extra roughness.

A box with only one room. Bats simply prefer larger structures that offer a wider range of stable temperatures. A well-constructed single-room bat house can be a good starting box that would be ideal for gifts to the general public.

Smooth interior rooms. All the interior wood must be roughened so that the bats can easily catch on it. Some commercial boxes have a filter inside the box that can eventually fall as condensation and urine rust staples. A "bat house" for sale in a major hardware store has only one groove on the "landing pad"; it's totally unacceptable.

Roof unprotected. Roofs without shingles can last only a few seasons, once the roof is compromised, the box will be unable to retain heat and will fall into disuse.

Nailed with unsealed seams. This type of box will deform and separate at the seams, allowing undesirable ventilation and de-excitation.

Unpainted and unprotected exterior. Some manufacturers insist on leaving bat boxes unpainted. While in some areas the color of natural wood may be an appropriate color, there is no good reason for the structure not to be protected. Although cedar resists rotting, it deforms and separates seams just as much as any other wood material.

Bad design. Research on bats has progressed very quickly, thanks to better communication between many amateurs and biologists across the country. For example, a large open-bottomed bat house is now preferred to smaller closed bottom designs that tend to attract more pests.

Old plans. Bat house plans can be found in a variety of places, which is good. Unfortunately, many posters, books and pamphlets were published years ago with plans now obsolete. Scary, this information is still distributed by many reputable sources. A pile of totally horrible shots obtained from a state wildlife agency were seen distributed to a wildlife program a few years ago.

"Recycled materials. Some people build decently designed bat houses, but with wood recovered from demolished structures in an effort to reduce costs. Since some pesticides can leave active residues for years, approach used wood carefully.

Unrealistic claims. For example, a seven-chambered bat has already been observed with nearly 600 bats inside. However, we are still only evaluating this box at 300. This is because 600 bats in this house-sized bat is overcrowded and unhealthy.
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### Re: Construction of a shelter, house, birdhouse at Chauves-Souris

This is taking shape!

Front / rear and roof closures:
shelters_chauve_souris.JPG (377.14 Kio) Viewed 345 times

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Runway, the opening space is 2 cm on 36 cm approximately:
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Closing sides (I made a green gap, I did not have good sized boards, they are new shelf that I had never mounted ...), one of the 2 side is hinged for observation or cleaning:

shelters_chauve_souris_coté.JPG (116.81 Kio) Viewed 345 times

shelters_chauve_souris_crochet.JPG (42.77 Kio) Viewed 345 times

A tricky thing was to find the correct deformation of the hooks so that it maintain a constant pressure (darkness, air leakage ...), I do not know if it will hold in time, we will see ... otherwise I deform the hook to maintain pressure

Next: apply the roofing ... and find the best place in the garden (I think to fix it to a tree at the bottom of the garden but I will have to cut some branches I think ...)

ps: Ahmed, my welds are good this time?
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### Re: Construction of a shelter, house, birdhouse at Chauves-Souris

That's it!

bald_souris.JPG (192.54 Kio) Viewed 341 times

41 kg the thing !!, I told you it would be heavy ... the climb in a tree will be difficult ...

bald_souris_weight.JPG (133.79 Kio) Viewed 341 times

At the location level, I see 2 possibilities

Option A) In the oak at the bottom of the garden:

The -: need to cut 1 or 2 branches, difficult to set up, robust fastening necessary, exposed to precipitation and prevailing winds (West), difficult observation, branches that can prevent the use ...

The +: free orientation, further from the house (calm)

location_chauve_souris.JPG (238.95 Kio) Viewed 341 times

Option B) On the balcony

The -: full orientation "EST" (if fixed on the length of the balcony) or "SOUTH" (if fixed on the width) .... the SOUTH side is sunny until until 13-14h after in the shadow of the house . Therefore less thermal inputs than an orientation 100% SUD (but overheating in summer will be avoided). Finally it's the balcony of my room (I sleep 6 months open window and I'm afraid some confuse their shelter and my room ...)

The +: much simpler fixation, simple observation, vegetation and good height, relatively well protected from rainfall and prevailing winds ...

xNUMX.JPG (2 Kio) 85.9_surface_location

In my opinion, option B) is needed ... at least at the beginning ...

What do you think?
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### Re: Construction of a shelter, house, birdhouse at Chauves-Souris

And here is the video

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### Re: Construction of a shelter, house, birdhouse at Chauves-Souris

This manufacturer uses a plastic mesh as a hook, it's a good idea I think:

If ever the streaks I made are not enough, I would do the same thing ...
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### Re: Construction of a shelter, house, birdhouse at Chauves-Souris

Yesterday I completely stumbled upon 2 people from this local study group: http://plecotus.natagora.be/ I told them about the shelter, of course.

They proposed to come to install an ultrasonic detector in the garden for 1 or 2 nights: each species of bat having its own ultrasonic signature, we can easily identify the species of the corner with such a detector!

I had an answer to one of my questions: a shelter can accommodate several different species at the same time!

They were very interested in my shelter, I showed them the video and I'll get them back in a few weeks ... and we'll decide whether to put the detector or not

ps: the shelter is finished for more than 1 week but I have not yet managed to put it up on the balcony ...
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torrent
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### Re: Construction of a shelter, house, birdhouse at Chauves-Souris

interesting as realization.

A little less than a month ago I saw a bald under a rafter on my roof (outside). then nothing, she had disappeared.
A little later I find plenty of poop on my terrace (almost the opposite of the first place) and a few days later the bat died on the terrace.

Is there a way to attract others (the first came alone)
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### Re: Construction of a shelter, house, birdhouse at Chauves-Souris

torrent wrote:Is there a way to attract others (the first came alone)

Yes raise mosquitoes!

Good laugh, I read during my research in recent days that an apple placed near the nest box could attract them, but 2 specialists that I met this Sunday say no and it may take several years for the nest box is busy ... especially if the biotop around is favorable (forest to 200m) ...

Well I took my courage to 2 hands (and 2 feet and 1 rope) and I mounted the shelter on the balcony, not a trivial matter ... since I was alone!

Well, it's done!

20180627_201511.jpg (188.47 KB) Viewed times 157

20180627_201529.jpg (197.37 KB) Viewed times 157

At the fastening level, I welded 2 stirrups with 4 brackets that I painted quickly, the installation is done with a small damping (insulation of pipes):

20180627_201916.jpg (303.42 KB) Viewed times 157

So when I welded the stirrup, I noticed this interesting phenomenon: we can see the increase in temperature during the weld seam (disappearance of the dichromated treatment beyond a certain temperature, which seems rather precise ...)

20180619_131329.jpg (226.51 KB) Viewed times 157

Obviously one of the 2 calipers was welded with more intensity than the other ...

ps: I welded in what way?
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