Hi John, it doesn't look like anyone answered your question so I will quickly. The answer is: Yes and No. Basically, the fundamental color is not going to change. If you're getting eggs you've got brown egg gene modifiers in the birds that are going to contribute to the green. The only way to get back to pure blue is to breed those genes out. And a blue egg isn't going to turn green either.
Having said that, anyone who has had birds that lay any kind of colored egg, knows that those birds can produce variations in the egg color. Sometimes it may be a darker or lighter shade. This has to do with things like the environment (extreme hot or cold), it can also be affected by stress (moving them, taking them to a show, predator attack, etc.), and even diet can effect the egg color. Additionally, there are at least three other things that can and do affect egg color. One is the laying season. It is not unusual for eggs laid later in the season to be lighter than those laid early on. Second is productivity. Birds that lay more often during the week are likely to have lighter color than say a bird who only laid once a week. And finally, the age of the bird. 8-10 year old birds will likely lay lighter colored eggs. Not always though. They may lay eggs just as dark but not near as often. Ergo, back to #2.
Hope that helps.
God Bless,
I have 2 girls I believe are Ameraucanas.... But I have not yet seen my color here. Am I in the right thread? I did read the standards page and looked at its pictures.... it also said that there were more colors then what it was listing. Theses are my girls... they are 21 weeks old. What is this color called?
