There's a few type and shank shade differences that I'm not up to date on, but the biggest giveaway is the colour. It's an extremely typical one for EEs and not one in the SOP for Ameraucanas. Also, I've noted that Ameraucanas tend to have incredibly long and shiny feathers, and in mature birds there's some more indicators in type such as general balance or tail set.Dang it! Lol
How can you tell an EE from a purebred? I should post my other rooster and see what every thinks.