If you have plastic foundation, keep an eye on them. I got first plastic foundation this year, as the hives were getting full added a medium 10 frame super to each hive. It started raining for over a week and had some cold spells. Each hive swarmed before I got to check them. When I did get to check there was no comb being built on any of them. Adding more wax to them now. Good luck B
Joe