Hi everyone, I have 2 mallard eggs that have been in the incubator for 13 days the first one has one half that is completely dark, but I can't really see blood vessels. I'm thinking that it was an early death, but the shell is so dark it's hard to tell. The second one has a dark blob (I'm pretty sure it's not a bacterial issue) that looks like it could be an embryo, but again no blood vessels. Are there any other ways to tell if an egg is dead? I'm using a strong maglite to candle them, but they shells are fairly dark and I can't tell. I'll try to post pictures soon.