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Date: | Tue, 23 Dec 2014 16:07:11 -0500 |
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We inadvertently found out how to size bees. Years ago, we made pollen traps of plastic about 1/8 inch thick - drilled out on a drill press. We experimented with different size holes, went with one that seemed best for a trap. Sent to a bunch of volunteers in a study - worked great for all but one beekeeper - his bees could get out, but couldn't get back into the hive. He was warned to try the traps for short period before selecting the best hole size - but like most of us, didn't read the caution. Heat prostrated the colony - I ended up buying a colony of dead bees. This doesn't work as well with thin sheets of plastic or metal. The hole sizing is more critical when the perforated barrier has some thickness - to a bee, the thin stock is something to wiggle through, the thicker stock is like crawling down a tunnel.
So, if you can figure out how to get you bees to move through a perforated barrier, this works like a champ. You can even determine what % are too 'fat'.
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