Thanks to you both, we will get some Permethrin and treat/re-treat! No roosters. Our Rhode Island Red picks only on the Barred Rock, and she's doing fine re: feathers etc.
Thanks for your reply to my post. Here are answers to your questions, additional info always helps!
They molted in fall and never grew healthy feathers back? - A: Since Fall they never grew back? Silverlaced W's back has remained bald since then. Ameracanus has battled molting since the...
Since the fall two of our 7 hens have had feather issues (or lack of). Silver Laced Wyandotte has a bare spot on the base of her back (see pic) and the Americanus has a bare bottom and only downy feathers on her lower back. I have checked for insects/lice...no sign of them but treated anyway...