Set eggs to hatch 11pm 8/4/16

I have some Araucana eggs that all came in the mail with completely detached air cells. I'm incubating them upright in cartons in my incubator. I am very excited! Our town allows us to have chickens. I really hope these hatch

 

One of the eggs has a blue stripe across the middle of the egg too! I've not seen anything like it before. What do you think?

 

Here's what all the eggs look like. Egg 27 also has a blue ring near the top of the egg.

 

Also, a close up of the odd tan speckled egg that I love (even tho it isn't blue)

 

Thanks! If these hatched I would be surprised :0

Have you ever seen an egg with a blue stripe?

Sumi, you mentioned it could be from a hiccup during the formation. Could you expand on that some? I find it intriguing.

 

Thank you! Yes, I did enjoy the article and it was a joy to read. You referred me to your part of the article that explained pigment irregularities to better explain the blue band on the egg. I'm curious though, would that apply to araucana eggs? I was getting the impression that the pigment irregularities in your article was a hiccup in the 'painting' process of egg laying. Araucanas blue pigment is in the shell, not formed as a 'paint' on the top layer. So I'm thinking it may be apart of an irregular she'll development. Though the shell isn't thicker across the banded part as far as I can tell. Hmm.

Thank your for the article!