Hello beekeeps, Maybe you can answer a question about a problem I am having for the first time. I have in a location 25 hives. I just checked and added some bee excluders to remove the honey this week. Upon opening one hive, I found most of the bees on the outside as if to swarm, but when opening the hive. The honey has fermented. One hive out of 25. What would cause this. I thought maybe a lack of ventilation and cracked open the top some. Any suggestions? preacher