The difference between Easter Egger and Ameracuna is that Easter Eggers are a mix of Ameracuna and something else but they still lay colored eggs. The Ameracuna breed was almost lost and so pure Ameracuna's are fairly rare. Hatcheries advertise easter eggers as ameracuna's but they're not really. You have to go to a breeder to get a true ameracuna. Also, ameracunas only lay blue and green eggs. Easter Eggers can lay blue, green, and pink. Pink eggs is because they were mixed with a brown egg laying chicken.
Sorry if I spelled ameracuna wrong. You know what I mean.