Molting is where they replace some or most of their feathers yearly. There may be a smaller molt during another part of the year, but I've seen my nine month olds and my 18-20 month old birds molt. Right now, Skye is completely bare around her middle and most of her bum. She's going to be two years old in April, I think. All birds molt, even wild ones. Lexie, my BR hen, had a terrible, long drawn-out molt because she kept laying and wouldnt quit. When she finally quit laying for two weeks, her feathers grew back fast. I could show you some awful pics of Lexie's.