Looking for a little advice or reassurance on a yellow jacket situation. I have been away for a few weeks and upon returning have been observing the hives. On one of my hives I noticed the bee activity at the entrance is way down compared to the other two hives. Then I noticed a bee wrestling a yellow jacket at the entrance. I then noticed a number of yellow jackets entering the hive without the guard bees hassling them, I assume robbing honey :-x. I haven't done a thorough inspection yet, maybe tomorrow. I did do a brief peek late today and saw a lot more bees than I thought I would find. The bee population looks relatively healthy. Also, Lots of honey in the super. :-D But also saw at least one yellow jacket in the super. I believe there is still a bit of a honey flow going because there is plenty of alfalfa and clover blooming and my other two hives are still abuzz with activity. The yellow jacket hive has substantially less activity and the guard bees don't seem to be doing their job, or maybe there just aren't a lot of them. I reduced the entrance to give the guard bees some help. I will do a more thorough inspection in the next couple of days and to better size up the colony and to look for signs of a queen. Any thoughts or suggestions on things to look for given the yellow jacket situation :?? Anything else to do to help keep the YJs out?