I raise silkies. The mother usually hatches but then they are being taken by an unknown animal. So recently decided to bring them in and incubate them. I have them in a box with sponges for humidty and under a heat lamp. keep temp at 99-102. I have had one egg die yesterday, it just stopped moving, it was on day 13. Im afraid the other ones will start to die also. Is it possible he isnt dead? He was moving alot and now i cant see him move at all with candleing. any advice will help. thanks