Silkie hen Stopped laying losing weight and feathers

[Tammys kevin]

My 1 year old Silkie hen has stopped laying, she is losing feathers and looks very thin, she doesn't seem lethargic and she is eating drinking and pooping normal, any ideas what may be wrong with her?

 

[Judy]

She's the right age to be molting; is this it?

 

[Tammys kevin]

I didn't think chooks would moult in winter lol now I feel silly