You are correct it is a grouse. I wikied it and it has some relation to chickens from what i understood, there is a you tube vid at a zoo , they were using a broody domestic hen to incubate the prairie chicken eggs. search words; prairie chicken , only a few vids on topic.
And if you browser...
Hello everyone I'm a chef from southern California that kept a garden and now keeps chickens as well , Iv been doing the chicken thing for the past year , uncontrollably expanding and improving day by day or so i think i am ,All the ideas are rushing in my head,I think I'm going nuts .What do...