After cold nights I have had a number dead drones and some drones in various stages of development in front of the hive. Since I only see these hauled out after a cool evening I assume that it is due to chill brood... most do the drone brood being on the outer edges do the brood chamber. I have also noticed that these dead bees seem to vanish over night. This afternoon my wife noticed what look like owl pellets around the hive. The pellets are about 3/8" x 3/4". I dissected a couple and they definitely contain bee parts... legs, heads, etc. Has anyone ever seen a small owl scavenge dead bees?