I think what you have is a throw back in someones newly started calico project. looks like a columbian mix. he may carry 1 copy of mottle which is why it isnt visible. I wouldnt use him for breeding altho you may end up getting a couple nice calico from him but im sure you will get more bad than...
They came from toni-Marie Astin originally but she no longer has pure stock and my poor girls are gettin some age on them. this is a cross with a yokohama
Also helps to keep ur roosts higher than ur nest boxes... they naturally go for the highest spot. so its important to make the boxes over head level and under roost level.
I'm assuming that this would be 2 different genes. Your gonna get blue eggs, the only difference is you will have both straight comb and pea comb laying blue eggs. Or if your breeding EE, you will still get some (or all) green and brown eggs.
Wrong button... temperment sometimes varies. Depends what breeders select for. Some hatcheries use the same breeders as well. Ventilation is a huge factor. Keep that in mind