It’s February 2019 as I delete everything from this post except the video. I’d barely been keeping bees for a year at the time I recorded this video. I was seeing things with my bees on a regular basis that did not come up in any of the beekeeping books I’d read. Bees hanging off the bottom bars and clogging the bottom entrance was one of those things. I didn’t know what was going on.
These days I like it when I see bees hanging off the bottom bars. It usually means the colony is in good shape.
I could go on, but check out the comments below for Rusty Burlew’s response to this video (on her blog, Honey Bee Suite). She answers the question of what’s going on with bees hanging off the bottom bars and clogging the bottom entrance better than me.