This is very interesting, I know 2 females will fight, but mainly due to eggs and such....hmmmmm.
Caged birds act so much differently than loft birds.
Our new bird Pollie a female green Quaker has been meaner than a snake here lately....now we find an egg in the bottom of her cage...
Well....guess I was wrong about your Doves.....
I guess a better response to your issue would be.....keep them separated if they fight.......
