Some folks use OE cock/erels in their projects. We only do the F1 cross for better chance of olive eggs. Like with any extra males, we invite them to lunch or dinner.
I'm trying to understand. I have one OE roo. My understanding is that he would be "F1" he is from a Cockoo Marans over an EE. Are you saying his offspring are not as likely to be OE? All but one out of 6 of the chicks hatched from his parents have been pea combed. (2 roos 4 pullets) (2nd pea combed roo has a new home)

e I tried to take a picture of it with my iPad, but it looked brown in the photos, so I didn't bother, but I am very happy with the color. She is an f1 bc marans over an ameraucana. I hatched her in June under a broody with a mixed group of eggs that included only one olive egger and the rest assorted marans. Out of 13 eggs, I only got her and a big blue roo to hatch.
