The Ameraucana is one of the few chicken breeds to lay blue eggs.  It shows many similarities to the Araucana, including the pea comb and the blue egg gene. It is tailed, muffed and bearded, whereas the Araucana in the United States has ear tufts and is rumpless. The earlobes are small and round, the wattles small or absent; earlobes, comb and wattles are all red. The shanks are slate-blue, tending to black in the black plumage variant.

Eight color variants are recognized in the American Standard of Perfection: black, blue, blue wheaten, brown red, buff, silver, wheaten and white.