My Alfa hen (was always the first ) is now being pushed aside. Even the roo won't let her eat. Her comb is fading and she just stands in the corner of the run. Can I isolate her for a while so she can eat and get stronger? What is this and what should I do? My 3 hens and roo are one yr old. My coop (droppings) get cleaned less often in winter, but often enough that my peeps never get dirty butts. I feed them cracked corn w/grit ( 1 cup to 15 lbs of corn) and a vegie or grass every day and fresh water daily. coop is warmed w/ a light on cold nights. The sick one is white, roo is Barred Rock and other two hens are Golden Comets. Thanks in advance for any advise.