I am using this method to transfer a colony of bees from a commercial to a national hive. There is drone brood in the bottom box (commercial) which will emerge when the Bailey Board is in place once the foundation has been drawn in the top box (national) and the queen has been moved upstairs. I thought of using a wedge to make a gap between the bottom box and Bailey Board to let the drones out. But can you please tell me what time of day is best to do this and how long do I need to leave the space open for them?
Thanks.
Thanks.