How did your 3 hens die?Be thankful you don't have my roosters. I wish crowing was all I had to listen to. Sometimes they start hollering when the hens start hollering when they're laying eggs. It can get seriously annoying.
I once had 3 roos and 4 hens that were raised together. No problems. 3 hens died. Still no problems. About a year later I got 20 hens for them. Still no problems. All of mine free range from dawn to dusk, so maybe that's why.