I have one hive I started noticing fighting on the deck a few days ago. I put in a reducer and have been watching. The girls are doing a good job of defending but it has not let up. I have 7 other hives close to them. I usually find the offending bees lying on or walking on the ground in front not able to fly. I have eyed over all of my other hives pretty close. I don't think these bees are from my hives. Most of them have a yellowish orange abdomen with a black tip. Their thorax is hairless and black, as I have been told from robbing. I don't see that on the bees in my hives. It rained late in the afternoon yesterday and kept them in till almost dark. I went out and blocked the entrance with grass after dark to keep them in today. When I got home and opened it up, several of them rolled out the hole rumbling with other bees. Is it possible I locked in invaders last night. What is the next step?