Re: What type of bees are these?
Some of the variability you see is a result of multiple drone matings. I have bees in my hives that look like all those bees. They were supposed to be an Italian/Carniolan mix. Now, I have bees from open mated queens that superceded their mothers.
I restricted entrances today with metal screening (hardware cloth). I cut it about an inch and a quarter by the length of the entrance (minus the opening I wanted)...Then, slipped it in the opening, allowing it to anchor on the top of the bottom board and the bottom of the hive body. Air circulates well and the entrance is restricted. HTH
I try to learn from my mistakes, and from yours when you give me a heads up :)