a snip from Peter Borst...
(1) Introduction losses, (2) abnormal and drone-laying queens, (3) abnormal supersedure of queens that lay normally, (4) accidental loss during hive manipulations, and (5) the normal supersedure of failing or worn-out queens.
Thanks for adding this. I almost automatically lean towards this kind of thinking to first specify exactly how the same mechanism may be different. I would also suggest that there could be an intermediate category between #3 and #4 which I have seen here (accidentally done here) on several occasion when I have had new queens in small 5 frame nuc boxs and inadvertently reversed one outside frame that contained eggs. I do think in this form of accidental beekeeper manipulated supersedure that variable wether also is also a critical factor in generating the supersedure cell.
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