Re: Queen breeders will this work?
Darrellva I've had problems with queens drifting with entrances further away than that and just as well marked, I've even seen virgins return & get balled as soon as they enter the wrong one.
However, the proof is in the pudding, (do they say that in the US?) 8 out of 9 is a fine result. However I'd still be a bit cautious before building a bunch of them.
In Lauri's pic, she has alternated the entrances front and back, which separates the entrances twice as widely than each nuc having an entrance front and back. A nuc your size only needs one entrance and in fact is better with only one entrance, so it could be something to consider. Visually, I think Lauri's nuc is more confusing to the returning queen when they have the plastic entrance guards on, than when they don't. Although I'm not a bee so who knows.
"Thinking Inside The Box"