i'm not a biodynamic beekeeper, but i am famillar with the "movement", and i do not use foundation. the reason, i beleive, you see only drone brood in an empty frame is because the bees will naturally produce about 15% drone comb. using foundation (and culling excess) makes this more difficult, and when faced with one empty frame, they will tend produce drone cells. this is where most people give up the idea, assuming that the bees will only produce drone comb if left to their own devices. move that first comb towards the sides, and add another frame...when the bees have the drone comb they want, they will draw worker comb. this may be "too much drone comb" for some beekeepers, but the bees obviously don't agree :) deknow -- Visit www.honeybeeworld.com/bee-l for rules, FAQ and other info ---