Why do some Ameraucanas look one way and others not?

[astatula]

I see excellent pictures of Ameraucanas here many times. I am wondering why some of them have a very fluffy beard down most of their neck and some of them have long draping feathering with very little fluffiness.

Which bird is correct for the breed? Both?

 

[Goose and Fig]

They should have a nice beard. Occasionally they get picked by other birds, but you don't want to breed ameraucanas that genetically have no beard.