I have a Rouen duck who was sitting on 13 eggs. I've had ducks before but always removed the eggs. I thought I'd let her keep them this time. Not knowing what I was doing, I did not keep track of the days. Long story short, we had a fox scare and I decided to remove the eggs from the nest because I wanted my duck going into her house at night, not sitting outside as prey. I immediately set up an incubator and put the eggs in. I candled the eggs and there were only 4 live embryos. So here I am with 4 eggs definitely close to hatching. The problem is, I don't know exactly what day I'm on, and I'm not sure when I should stop turning and go into lockdown. These are pictures from last night. Can anyone tell me how far along these eggs are?? I'm guessing they're somewhere between 21 and 24 days. I'm in a panic and any advice would be appreciated!
Also, 3 of the 4 embryos are very active. The other is not moving. Does this mean it's dead? There are still some red veins but the embryo looks bigger than the others and it's sort of "floaty" (for lack of a better word)