Do ameraucana chickens get along well with other chickens?

we got several different chickens on easter for egg layers in the backyard, my brother wanted some of the ones that laid blue eggs so we got two ameraucana chickens, one white leghorn, two plymouth barred rocks, and one polish chicken. The ameraucana chickens are almost constantly picked on by the leghorn and barred rocks while the polish seems to be left alone and seems to leave them alone. So, is there a way to make the chickens stop bothering the ameraucanas or will they stop when they get bigger, they're about a month old now? We thought they'd stop when we got them into a coop and out of the crowded indoor cage, but they didn't, if it makes a difference.