Hello everyone -- I have 5 six month old pullets (barred rocks, EE, silver laced wyandotte & black star) that were hatched together & raised by us since they were 3 days old. On Saturday, my husband & children discovered the silver laced wyandotte bleeding from a cut near her comb. No one saw what happened. Unless they are free ranging, she is kept away from the others (she currently spends her nights in a large dog crate in our laundry room). When everyone is out she is mostly left to herself, but there are times that either the barred rocks or the black star go after her & peck her back or head. She usually is able to run away or a person breaks up the pecking. We have applied pine tar to the cut & the area surrounding it. I'm very confused as to why this has happened -- the girls free range for 2-3 hours a day, live in a 4x2 hen house with a 4x12 run & before this happened I would have guessed that she was near the top of the pecking order. She is the only one that this is happening to -- it doesn't seem to be a case of 1 chicken bullying all the others. Since the week prior to this starting we have been leaving a red light on in the hen house at night because it has been so cold -- could this have something to do with the problem? Will taking the light away make the picking stop? How long should it take to re-introduce her once the picking does end? Having a house chicken is not a long-term solution, so any advice is very welcome! My entire family is very attached to all of these girls & we want to find a way for them all to live together in one space peacefully. Thanks!