There are a number of reasons for crowding - hive full of bees
and/or honey being one of them. If you have put in a medicine such as
formic acid or menthol they might also go outside for a while. Weather
might be another reason - both inside and outside the hive. Woirthwhile to
check for verroa mites at this time of the year if you have not done so.
Good idea to get a mentor in your area to help or a state inspector for
your area.
John F. Mesinger
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