Hello! Ok so this is my first time hatching duck eggs. I have 9 that I know are alive by candling and they are moving, but some have different hatch dates. I have one egg on day 27, no internal pip but still moving around. That one is on lockdown. My question is: i would say about 10-15% of the egg at the small end is still a yellowish color. From my research it sounds like the whole egg other than the air cell should be filled with ducky by now. I tried to take a pic but in pics it does look all black, but not when I candle it. So I'd say about 40% is air cell (slanted) then 50% ducky and the last 10% a yellow color. Is this normal?? I know it's alive right now but I'm freaking out it won't hatch. I know I have my temps and humdity correct. Just wondering if that's what the egg should like at this point. Thanks so much.