So last night I candled my eggs while I was turning them

thatās a lot of candling lol
It was most exciting & invigorating to see the embryo development & spider like veins & such all over! I gots babies!!
I did find about three that have differences:
> One egg has a nice spider vein system & big red outline of the baby but off to the side at the edge of the vein system there is a ādotā, like someone took a pen & marked the outer area. - Ideas? Iām not sure I can take a pic but I will try later.
> One eggs has a dark area, like it would be the embryo, but I cannot see anything. - Ideas?
> One egg has a large thick red line, almost looks like the start of a baby but not in the place Iād expect nor the āfetalā position the rest have & it seems a bit āout of placeā. - Ideas?
> All eggs are in
very different stages of development, I guess this means I will have a few days of hatching?
Other than that, they all have nice vein systems, are clear, & developing embryos. I was surprised to see what all you can see candling an egg & how very different in size this development area can be! I have a small egg where Iād think this area would be small in ratio but it seems to be almost the entire egg! Thatās a small space for a chick lol
I cannot wait to candle them again & with my kids! Tips on things to watch out for? I know some of the bigger ones like rings & non-clear areas, broken air sacks & such but anything youāve experienced?
Thanks so much!