Jerry,
External 90%+ R.H. here in Manitoba seems fairly common - with movement
to other levels as well.
But, with the also frequent (permanent) sub zero temperatures, any air
pulled into indoor conditions will show R.H. at far lower levels.

Only in our arid west or indoor chambers do we ever have a problem of
low humidity.

So, what are the typical problems for bees being held in low R.H.
conditions over extended periods or during in winter housing?

Regards,
Peter

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