The method I've seen posted is to put food coloring in their vent. You can skip the ones that you KNOW the color of their egg.
I don't know if some colors are better than other but I would think the red/blue/green would be the best bet.
I have not tried this.
Bruce
A REAL Ameraucana?
If yes, then blue.
If not, it is an EE (See Jenni's excellent description) and she will lay blue OR green OR brown.
Hopefully, they are all "she". Chicken sexing is not a 100% thing. I got lucky, 12 girls.
Brown or green, no spots. HIGHLY unlikely they will be blue...
These are really cool looking but I think the Cubalaya Peewee eggs would fall through. That and the cats would have too much fun knocking the eggs out.
Nice job on the difference between hatchery "Ameraucana" and REAL "Ameraucana" Jenni. Ideal told me that their "Ameraucana" are not...