As mentioned,they may be Africanized honeybees(aka killer bees) which can present a very serious problem.If their still around as you read my post,try to enlist the help of a local beekeeper. Setting swarm traps in the area of your chicken coop may entice the bees to move into traps and not your coop.They may be scout bees looking for a new home, if they decide on your coop you could have thousands of bees descending there...!
I'm a beekeeper and chicken tender, so i have an idea of what can happen here. Calf. has the Africanized honeybee, and they are dangerous if provoked.Most honeybees are calm and non-aggressive while swarming, but once they set up house keeping in a place of their liking, they will agressively defend that place, tere new home...Find someone who knows honeybees, Africanized or not, you do not want them in your chicken coop.Good luck, keep us updated as to what happens...Kevin