Last night I went out to take a look at the hive and was shocked to find a mass pile up of what I thought were dead bees completely blocking off the entrance. I freaked out and ran to tell my husband who went out to see and noticed that they weren't dead at all, they were just all clustered and piled up on top of each other. While relieved to make this discovery, I'm still really confused as to what's going on. Bearding came to mind, but don't they normally spread out all over the front of the hive, not just pile up in the entrance? There were no bees on the front of the hive at all, just packed into the entrance. Not to mention, it's been cool and rainy the past 3 days so I wouldn't think they're hot, plus the way they were blocking of the entrance, they couldn't be fanning the hive I wouldn't think, since they were cutting off any airflow. What's going on?