Bees are cleaver little girls. They will generally follow the same paths from point a to point b... when they return to their hives they do a little jig to share with their friends where the good snacks are.
Because of this it is time consuming but fairly easy to figure out where they live. Here is what you do:
Plan on bee-ing (lol sorry, had to)
occupied for a good portion of the day. carry a water bottle with you.
Start at the location you know the bees are at and follow one until you lose sight of it... at that point STOP!
Stay put, hang out and be quiet. If you stay put long enough you will find that your little bee friend (or one of her many sisters) will be back in a moment.
Once you see another bee heading away from your starting point, follow her.
Keep doing this until you find where they live.
You do have to remember though that bees will travel up to 10 miles for food. Because of this you may want to stop once you reach your property line. BUT bees are very efficient little buggers and will usually pick food locations closer to home, that is unless little suzzy-q-bee found a better tasting flower down the road.
Since my first post I have again talked to my mom (we chat a TON) and she followed up with telling me that you may want to get a "pollen patty" from a bee supplier as the bees are lacking that as well if they are stealing your feed.
As far as hurting your chickens, they should be fine... heck, they may be happy little hens as chickens eat bees, so they have a special treat right in their own coup.
Good luck
-Malinda