Ok so this is weather related…but we have a swarm of Yellow Jackets or something around our humming bird feeder. I think they are after the sweet liquid my mom puts in the feeder for the Hummingbirds. I have never seen them do this. My girlfriend a different type of bee around her feeder too, that was swarming on it. maybe this a sign that these insects are storing things for the winter…? Hopefully these photos work. If not..then here is the link.