I'm trying to figure out where I should get my first chicks from, and I've heard that Tractor Supply sells 'straight run' chicks. Does that mean they are not sexed, and it's a gamble as to how many hens or roosters you end up with? I have heard there are some breeds that can be identified immediately as to what sex they are, and I'd like Rhode Island Reds or Leghorns. In the past I just purchased chicks, which were 'straight run' (if that means not sexed), and was pretty lucky to end up with mostly hens. Lots of questions!