I have a Narragansett tom and want to get a few hens. Checking into buying some and everyone wants you to order a minimum of 15, which is way more than I need. I'm just looking to keep a few free range around the yard and maybe hatch eggs to raise a few for the table. I can find other heritage breeds close by where I can just get a few. My question is: does mixing the breeds really affect the resulting bird other than it not being "pure" breed? I hate to mix, knowing that the breeds are somewhat endangered, but if its for pets/dinner does it really matter?