Re: improving breed, I was wondering about crossing Shetlands with Whiting True Blue, which are homogenous blue layers with potentially 300 eggs per year, due to their Leghorn parentage. I realize this wouldn't be preserving the breed necessarily, but making an American (specifically Coloradan, since WTBs were bred here in the '90s) version of the breed. Maybe if the offspring were backcrossed to Shetlands, this would be more of an improvement than a hybrid?
I'm not a breeder at all, but very interested in learning everything I can before hatching WTBs later this summer. And as I learn more about Shetlands, I start daydreaming about a Shetland flock to show off at the Scottish Highland Games!