My rhode island red had stopped laying eggs for a few weeks now. I thought it was normal because it is winter and they stop laying to molt. But my golden laced wyandotte is still laying. The RIR also is losing feathers in her neck and tail. It’s probaly molting but the other 3 are not losing any feathers. Her comb is also pale so I gave a light dose of corrid in their water. Is she okay? Do I need to Corentine her?