Nope... it doesn't match any of the standards for feather pattern/color that I know of.. Quoted fro the Ameraucana Alliance website...
AMERAUCANA VARIETIES (Large Fowl & Bantam)
Black, Blue, Blue Wheaten, Brown Red, Buff, Silver, Wheaten & White
Silver is the same as partridge in other breeds. Brown red is the same as black copper.
What you are sporting there is a very typical pattern on Easter Eggers. I think it's similar to wild type partridge... but definitely not an accepted variety of Ameraucana.
I have an Easter Egger that looks VERY similar. She is one of only two out of hundreds of birds to receive pet status here!