They all lived in their 1:4 ratios fine for a while now breeding.... now my roos stated tearing up the hens.. i separeded them.. then several of the hens lost their marbles now and started tearing each other up... they all go for each others eyes and ear area... had lots of blood lately... none died tho... what the heck is the problem???!! Ill note too all of my browns are in cages obove them... no problems at all.....