Do you have an entrance reducer on?
Bearding in my Apiary last July:3 month old hive, little testy the last 2 weeks. Went to check them this morning and closed it back up. The last 2 times I found the girls on top of the bars when I opened the roof. Went out a little while ago and found Them all crowded by The first and middle entrance holes, it's late afternoon and 90 outside. About the time I was going to go out and raise the roof for a little for more ventilation there was quiet more girls flying around so I figured I'll wait till they settle down a bit. Being "new" to keeping bees I thought I'd ask for some advice. Sooner or later I'll get the hang of this, I kind of new it wouldn't be smooth sailing. :scratch: