Some lovely birds in those pics.
Ameraucana and EEs....my love hate relationship
There are clues to purity if parentage is an unknown source.
Ameraucana have white skin and slate colored legs.
Bottom of feet will be white.
EEs usually have yellow skin and green, blue, brown, yellow or slate legs.
Ameraucana have pea combs.
EEs can have pea combs...and other combs (cushion, rose, straight, etc)
Ameraucana always lay a blue tinted egg.
EEs usually lay a bluish green egg because that's what people usually seek in the breed so hatcheries breed for that. But they can lay brown, white, green, pink...
Ameraucana lay a smaller egg less ofter than an EE. EEs are better layers of larger eggs.
My EEs ate more heat tolerant than my ameraucana also.