I'm not sure if this is the right place to post this question but I did not know if what is happening is usual or not so I am posting my problem here. One of my chickens (Americauna) is seriously molting and none of my others (5) are. Is this usual, unusual? They are going to be two years old this January. they all molted last year at roughly the same time. Are they supposed to molt every year? Should I be concerned about my one who is? Any insight would be greatly appreciated. thanks.