I have a couple of wide-white banded Zs I held back and am wondering if they can be selectively bred for this or any other desired trait? I'm familiar with the incubation temperature manipulations as proved out by Mitch but am toying with the idea of line-breeding etc. to possibly refine/improve this trait going forward. Surely some of you out there have experimented with breeding to a desired trait/outcome beyond incubation temp. manipulations?
Bill



