Can a olive egger lay an olive egg if...

[Higins00]

They have a full comb? Is it a 50/50 chance or 100% brown

 

[Goose and Fig]

Do you mean a single comb like a marans? She'll probably lay a marans-like egg.

 

[Higins00]

Yes, it is a cross from a maran and true ameraucana. She has a comb so I don't know if there is a chance she will lay olive or it will be brown.