> I have switched to natural combs (no use of foundation) completely over
the last 2 years. But if this would be a cause, why don't all colonies have
small ones in them?

Dennis Murrel has some interesting observations on this subject on his
website.  He found that size of workers varied with season, and, if I
remember correctly, with which cells the bees raised the workers in.

I see small workers in colonies that have severe DWV infections.

Randy Oliver

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