Here in the north, late August is not a good time for drones. Although it is still summer, you know fall is coming when the drones get ousted from their hives. Drone eviction is a vital part of the colony life cycle.
Yesterday when I walked past my hives I noticed a large number of drones on one of the landing boards. On closer inspection, I could see them trying to get inside, but the workers were having none of it. Two, three, or four workers would block entry and sometimes fight the drones to the edge of the landing board until they fell off the edge.
Basically, the workers will keep fighting off the drones until they either starve, freeze, or get eaten. Since the drones serve no useful purpose during the winter months, a colony without drones has fewer mouths to feed and fewer residents to clean up after. So out they go! I kind of feel sorry for them.