I have 15 chicks all the same age and they have been doing wonderfully until last night. I went out this am and someone has started picking out one of my polish’s head feathers. I’ve stood out there and watched and can’t find the culprit!! I’m hanging a head of cabbage to see if boredom is coming into play. It’s been quite rainy here. Any suggestions would be great. I am new to all of this. Tia