My 2 female Muscovy ducks laid eggs 37 days ago. We candled them yesterday because we weren't sure if there was any life. All of the eggs were not viable. When we cracked them open a milky white substance came out. It looks like one egg had life but died. We are letting the girls sit on the eggs themselves, but it was cold when they started. Could that be why the eggs didn't take? We have never done this before so thank you in advance for the help.