We're about 80 miles directly south of Kansas City, and a mile from the Kansas border. We just got back into the chicken "business" this spring, with a "Barnyard Mix" ordered from the local feedstore, and got quite a mix, indeed! Examples include the Barred Rocks that are, by all indications, actually more Dominiques (the roos' combs are sure Dominique-style!), one that is a Turken mix, some Black Copper Marans mixes, and a few mutts that you'd have to see to believe
I'll have to check out that Jacob's Cave info, now!