Long story short my grandpa is getting into chickens and i wanted to order him 50 or so chicks from mcmurray. Probably something like 15 white leghorn St Run, 20 Rhode island red St run, and 15 Black stars ( only females ).... He plans on butchering excess roosters from the St runs and i told him to expect half to be roosters so my question is shouldnt he end up with about 30 or so females if they are really 50/50? Also i have read about mcmurray sending a mystery chick i think? What does this mean. Does it mean every time you order a certain amount of a breed of chicken they send you a mystery chick? Have yall had good experiences with mcmurray? Are all the chicks healthy, happy and good layers for the price? I noticed they may be a little more than other hatcheries but they seem to have better reviews on the internet.