I got a new Pomeranian gander about a month ago. We was previously housed with a few ganders and one goose, his feathers are chewed to bits from the other males and the tight quarters. He has cleaned up since in my pen but his feathers still are a mess until next molt, when do they typically loose their old feathers? Iv had a goose for 5 years but never took notice to the timing of it. Thanks!