Seems odd to me, but I'm new at this. My divider board is at the half way mark of my 4 foot hive. There are at least 3 bars of empty space at the back. I have 3 open 1" holes in the end. It's average 90 degrees every day and the bees seem to be plugging two of the three holes with ther bodies like I've seen them do when the weather was on the cool side. Looks a little like the are trying to chew on the wood to make it larger?? With the entrance holes plugged many bees can't get inside for the night, if so it's after I've gone to sleep. I have a screened bottom board and it's open. Really don't think they are pluggin the holes to keep warm, since the night time lows are in the 70's.
Would be very difficult - should I attempt to drill another entrance hole? Or should I mind my own business and leave them at it?