Ive actually not fed them any feather fixer until today after the three died and I'm not sure on the age since I got them from auction I know almost nothing about them they look to be adult hens just haven't been laying eggs but I figured that would be from the stress of the move and pecking...
I bought about 30 americana hens from an auction last week I got them cheap and took a risk because almost all were pecked bald on their backs I made jackets for all 30 removed all roosters bought feather fix feed and put stop peck on the severe birds and most have began to grow back feathers...