I just went out to our hives and found a ton of them hanging out by the entrance. I'm thinking they are too warm?? It was in the 90s today and yesterday. Should I tilt the top a bit? We hope to get some screened bottoms, but they are solid at the moment. This was happening on just one hive--the other appeared normal. They sit side by side. Thanks! Seems like the more I learn about our bees, the more I realize I don't know!!