My little backyard flock. Also, is my rooster an Ameraucana?

2nd pic is (obviously) my new rooster, Rex. He looks similar in ways to my Ameraucana hen Fluffy, (3rd picture). And I’ve googled Ameraucana roosters and he seems to match some of the pics, specifically Blue Wheaton roosters. I mean I don’t really care what he is, he’s gorgeous and has the perfect cockadoodledoo crow. Plus he was free, and he fit right into my flock, all the hens accepted him so fast.