This past winter, I had some issues with feather picking in my flock. I have SS, EE, BA, BO, SLW, and a Delaware (all raised together from day-olds). Without going through all the details, what I ended up doing is throwing caution to the wind and have been allowing them to free range and things are going much better. In any case, my neighbor (who grew up on a ranch) swears that my problem is that I had more than one breed. She seems to think that they all need to look alike. Is there any truth to this?