The incubation period for quail is 17–18 days, depending on the strain. Successful hatches depend upon a good understanding of incubator controls at 19 days they are dead.
http://AmeraucanaAlliance.org/faq.html#Seven
"...even if a bird meets an Ameraucana standard breed description, but doesn’t meet a variety description or breed true at least 50% of the time it is considered an Easter Egg chicken."
http://AmeraucanaAlliance.org/faq.html#One
So, it is an...
You should ALWAYS give credit to the source you copied from. Please click on the link to read the entire FAQ & answer from the Fowl Stuff site, along with several others.
http://FowlStuff.com/FFAQ.html#seven
The Ameraucana Alliance is applying to have large fowl lavender Ameraucanas recognized by the APA and is asking for your help.
If you have been both an APA member and had large fowl lavender Ameraucanas over a 5 year period you could sign an affidavit needed as part of the recognition process...
The Early History of the Ameraucana Breed and Club, by Richard Orr may also be of interest.
http://AmeraucanaAlliance.org/DnLd/Early%20History%20by%20Richard%20Orr.pdf