A while ago I got 12 new chicks to go into my flock of 18, but we were planing on getting rid of 7 of the 18. but it turned out one of our pullets was in fact a rooster, so we wanted to get rid of the rooster with the other 7 girls, but I have herd of bad things happening when you only have one chicken to mix. so I decided to mix All 12 with all 18. but after 2 weeks ( to this day) all twelve chicks have been huddled up in the corner. if thats not bad enough 4 of the 12 have gaping holes in their heads. I don"t know what to do. PLEASE HELP!! ( oh, i did put peck no more solution on their heads and I have been treating with rooster booster poultry wound spray.