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NetComrade Nurse Bee
Joined: 21 Apr 2014 Posts: 36 Location: Paw Paw, WV, USA
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Posted: Mon Apr 21, 2014 7:02 pm Post subject: Mason Bees |
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I bought a mason bee house, and had it lying around outside (out of rain) and hoped mason bees would populate it.. only they chose to populate some old pipes I had lying around instead...
I stuck the "house" into a stack of firewood I plan not to touch this year, we'll see what happens. |
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semiautonomous Guard Bee

Joined: 30 Dec 2013 Posts: 51 Location: England, Shropshire, Shrewsbury
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Posted: Tue Apr 22, 2014 10:35 am Post subject: |
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I don't know what kind of bee house you got for them but mason bees can be quite fussy and not all commercial solitary bee houses are made very well.
In general what they need is for the tubes, whatever they are made out of, to have one sealed end and no cracks or splits along their length. Leaf-cutter bees, that normally come out a bit later in the year, are less bothered by that but for mason bees its pretty well a must. The holes should be no more than 12mm wide, there are some really tiny species that like really small holes but I think around 12mm is the max. They should also be no shorter than 10cm, ideally between 20cm and 40cm. It should also be somewhere sunny, the pore little things don't have a hive of sisters to keep them warm so they need some morning sun to warm them up.
It is quite easy to make a nesting box though. Just cut up some bamboo canes just above the node so you end up with a bunch of tubes with one end sealed by the node, tie them in a bundle and stick them under the eves of a shed or something. You can do the same with any hollow plant stem like cowparsley. Or just drill holes in a lump of wood.
The main thing as always though is to listen to the bees. Look at the old pipes they have chosen and try to see what your bees are looking for in a home first and then replicate that.
Good luck with them, they are really interesting creatures and the more pollinators of all kinds we have around the better.
P.S. Here's a pick of a nesting block I made for my grandparents a couple of years ago. You can see some of the cowparsley stems at the top have been filled by mason bees while the slightly split wood at the bottom has been used by Leaf-cutter bees.
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zaunreiter Moderator Bee

Joined: 26 Nov 2007 Posts: 3097 Location: Germany, NorthWest
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Posted: Tue Apr 22, 2014 12:51 pm Post subject: |
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You can get some mason bee houses with glass tubes, so you can observe the bees when building their nest, see the larvae when the eggs hatch and so on. Most interesting, you have an observation "hive".
See:
from: http://www.wildbienen.de/wbs-kauf.htm |
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Bugscouter Silver Bee

Joined: 19 Mar 2012 Posts: 808 Location: USA/California/ Sacramento
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Posted: Tue Apr 22, 2014 3:20 pm Post subject: |
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Thanks for the reminder. I've been meaning to try making a block, but with many more different sized holes. Start with 3/8 inch, then 5/16, followed by 1/4, 1/8, and 1/16 inch. Apparently in our area the 1/16 inch holes will fill first as some of our tiny solitary bees emerge first. Those tiny little girls do a great job on the strawberries and cherries.
Ron |
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NetComrade Nurse Bee
Joined: 21 Apr 2014 Posts: 36 Location: Paw Paw, WV, USA
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Posted: Tue Apr 22, 2014 8:46 pm Post subject: |
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when you use blocks, do you clean them, or are they self-servicing?
I recall seeing videos even refrigerating the bees for the winter and cleaning huge "hotels" |
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Bugscouter Silver Bee

Joined: 19 Mar 2012 Posts: 808 Location: USA/California/ Sacramento
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Posted: Wed Apr 23, 2014 2:44 am Post subject: |
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Net,
I'm not sure your post was directed at me, but I've not tried yet. I know you can buy straws for the hotels, pull the straws out when full, and replace with fresh straws. The idea behind putting the straws and cocoons in the refrigerator is that you can take a few out at a time (next year) and spread the emergence out and have a longer pollination period. The straws are all the same size so you get one species. I think it would be better to provide a variety of homes and therefore a variety of species and let them emerge on their own time table (not my original thought by-the-way). I don't know when to clean out the blocks because some of them will over winter as adults and others as cocoons. |
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Quality Top Bar Hives by Andrew Vidler
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Conserving wild bees
Research suggests that bumble bee boxes have a very low success rate in actually attracting bees into them. We find that if you create an environment where first of all you can attract mice inside, such as a pile of stones, a drystone wall, paving slabs with intentionally made cavities underneath, this will increase the success rate.
Most bumble bee species need a dry space about the size a football, with a narrow entrance tunnel approximately 2cm in diameter and 20 cm long. Most species nest underground along the base of a linear feature such as a hedge or wall. Sites need to be sheltered and out of direct sunlight.
There is a spectacular display of wild bee hotels here
More about bumblebees and solitary bees here
Information about the Tree Bumblebee (Bombus hypnorum)
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