I just love those barred and beared birds. When I was starting to really get into chickens I went to a small local hatchery that was selling out and I asked for an EE hen. They came back with a cuckoo hen that was bearded but had a single comb. She layed light brown eggs so I sold her. That was before I knew anything about genetics. At the time I also had a pair of blue ameraucanas and If I knew then what I know now I could have crossed them and gotten a sexlink then mated the best roo back to her.
I have seem Dipsy's cuckoo blue eggers and I just saw maransguy's olive egger and I think they could be considered ameraucanas. Maranguys hen could be a brown red and the cuckoo ones could be cuckoo, lol. Now I dont mean to change the subject but it seems like its happening anyway. I think that more cuckoo ameraucanas should be bred even if they dont match the leg color requirement because if you look at cuckoo polish and cuckoo rose combs and cuckoo dutch, they had to make an exception to the standard because with sexlink barring you will never be able to get blue legs.
Okay now back to the topic, I really like the olive eggs. We had some SLW x ameraucana crosses that laid a darker green egg that I liked but they were mean little buggers.