Mrs. K :
I think I'll wait for day 10 since I'm a newbie and it will be a little easier for me to see whats going on.
Mine are under a broody hen, but I was too thinking of waiting til day ten, then I looked at pictures on here and I think it might be easier to see about day 8. I mean if you get the spider web looking thing, you should be a go. The pictures of the older eggs, have this dark spot that is the chick, but also might be a dead spot.
AND I don't think I can wait. mk
With brown eggs its kind of hard to see it but on day 11 we was able to see the spider web veins really clear and you can see the baby bobbing around in there.
I tried one on day 9 I saw nothing I worried maybe it was dead put it back marked it with an x so i would know it was the one I looked at.
Then day 11 I took the kids for the first time to look at every one of them we then marked each one we saw with veins with an A and a # then put them back under the hen.
Its just easier for me that way to keep up with what I saw and how they turn out.
Blue eggs a little easier, and green eggs also......white eggs are way easier to look through.
I had my lap top on and it did make it difficult to see at first so I had to make the room completely dark before I could actually see anything from the brown eggs.
Good luck!!!
