Have you heard about the Easter Egger chicken?
The Araucana breed was imported to the US in the 1920s . They are rump-less and have ear tufts. Some of the original Araucanas had the ear tuft gene, which was lethal when the chick gets a gene from each parent and will die in the shell before hatching. The gene that causes the blue/green egg color is dominant.
In the 1970s the Ameraucana was developed by crossing the Araucanas with other breeds: retaining the egg color, having a tail but without the ear tufts. Now many people and hatcheries are breeding the Ameraucanas to a variety of other chickens.
|"Easter Egger" eggs|
As always, post questions in the comment section.
--Dale, aka Turkeyman