It's been a poor year for me in my micro climate. Very poor flow this year, too cold and dry. Been in a dearth for over a month now. Left what the bees made for them. Now mites and whatever diseases they infect the bees with to weaken them. Lost at least 30% so far and climbing. Even some of my April nucs that were up to 6 frames. I treated with Apiguard in Sept. I've never treated in the spring. I am treating now even though it's a little hot for it. Lots and lots of dead mites mites on the bottom board slides. Never had them like this before. I knew they quit drone laying early but put that down to a poor flow, now that is another external sign I will watch for in the future.