The way the pea gene is linked to the blue eggshell gene is that they are pretty close together on the chromosome. A genetics guru on here years ago said that the two genes are carried together about 93% of the time. That means he has a 7% chance of having the blue eggshell gene. Not great odds but don't give up hope.
I had heard about pea comb and blue eggs being linked before, but not to that big a decree! Do you happen to have the source post? Quite interesting that there are lots of chicken breeds that do have pea combs but lack the blue egg gene, Brahma being an example (keeping it meat bird related
). So I assume if those were used it would be 50/50 if pea comb also means blue eggs, since the Brahma chromosome would lack the blue egg gene, right?
