I'm in my fourth summer of beekeeping. The previous years there's been no problem with keeping bees not too far from the house. However, this year the bees have become aggressive. They're more aggresstive during inspections though I'm not doing anything differently. For the first time my wife has has bees getting into her hair; she now wears a hat when going to go gardening. Moreso, after an inspection, a few would roam the back yard for the rest of the day ruining the outdoors for my wife and daughter. I got a call today that for the first time even the second day after an inspection there's a roamer or two near the back door. At the start of last year I had to get a new package. I'm pretty sure they swarmed once last year. They seem otherwise healthy. Lots of honey being produced. They did swarm three weeks ago, but I saw new tightly packed larvae on a few frames yesterday, so the new queen is active. My thoughts are that the new queen last year mated with a more aggressive drone and now those offspring are what I'm dealing with now. Will getting a queen from a breeder help if that's the case? Other suggestions?