I placed 2 eggs under my broody Silkie back in December; candled them, all seemed well but the chicks, somewhere along the way, died. Placed another 3 eggs under her with a hatch date of this past Monday; same thing, candled @ day 10 and everything looked okay but nothing has pipped or hatched. Candled the eggs last night and 2 look very dark and one was definitely a dud (nothing but liquid inside). Thoughts on what we're doing wrong? Thanks.