I say it's the white one as well! My chicks turn 5 weeks old tomorrow, and I can't wait for them to be old enough to start laying, although, I am having the time of my life watching them grow up! I have 3 Ameracauna chicks, and mix of others (see my signature). I purposefully chose a variety of breeds, colors, and color eggs so that I would have an interesting and colorful variety in my coop, pen, and egg carton. Hopefully at least one of my Ameracauna will lay blue. That would be awesome!
OOOOOOH, a white EE! I so wanted one of those! I bought an EE and a Delaware at the feed store some months ago (got the Dellie so the EE wouldn't be the ONLY white chicken in my flock) but the chick grew up to be white and GOLD. So I named her Gilda. Then I later bought two white bantam EEs and one is turning more silver than white. But the white one is staying white so far.... (they're about 6 or 7 weeks old.. maybe 8... )
But yah, the white gal is your green egg layer. She's an EE. PRETTY bird, and pretty egg!