Okay so we opened up some of our hives only to see absolutely no brood. There are thousands of bees in the hives but absolutely no fresh brood and no capped brood either. Have we lost all of the queens in the three hives we have checked. Is this normal. Or have we missed something that we should have known before hand. If necessary do I need to find new queens, about a month and a half ago all of these hives were normal and had a good brood pattern.