> My barn swallows moved away this year Im assuming because I have a 100
> hives sitting in the barn yard. You can even take a ball and throw it in the air and
> the bees attack it.
 
We had a similar experience and found it was the drones chasing the birds.
This made the birds so upset that they were attacking our cats.
 
There was more on this some time back.
 
Allen