As long as we're on the subject of finding queens: Mine are almost always where there is work to be done: on frames with recently vacated cells. When I am looking for the queen I really don't pay much attention to frames that are all capped brood, or all capped honey. The frames to look for are the one's that have just a few capped cells remaining. Of course, some queens run and hide, but most of mine just keep working, even on a pulled frame.