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I would be very interested to see what your counts are. It would be nice to see some counts of those who are not treating so we can get an idea of what levels of mite infestation they are successfully living with.i'll be taking mite counts soon to get an idea as to what levels of infestation they are tolerating.
How would you create the "warm side"? What direction will it face? There are very real elements that must be factored in if you want to copy the real thing.My first thought is to build a very tall narrow hive about the size of the dimensions in the video.
WlC,As for 'feral' swarms, there's a lower percentage that they'll overwinter successfully, but if you consider the proportion of swarms that are actually feral vs the swarms that are from managed colonies, you're still enriching for feral/resistant stock.
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So, I'd say that trapouts/cutouts that include comb from known overwintered feral colonies, are more valuable than a swarm.
I'm tempted to think bonding any old stock is probably a waste of time and effort. Do we know of any reports of success?So, it's still better than 'bonding' any old stock.