I've had this problem for aloooooooong time & have tried every gimmick known to man kind & nothing has helped. My chickens look like they have been at war. If you find out let me know please. You will hear protein first then the peepers, then the pine tar & probably the aprons. I shouldn't be so negative because maybe something will help your chickens. I'm just frustrated because I can't stop them from eating their feathers. I free range everyday mine do it on the roost. My chickens don't hurt each other they just peck the feathers. They are great egg layers so I really don't want to cull them. Lately, I've been dosing them every evening with Vick's, & whatever else I can find. I'm gonna be persistent & just reapply everyday.
