I have looked on tons of threads and I see a bunch of people telling whether they think the chicks are male or female- but how do they do it? I don't know. Some say they can sex the chicks based on the color. Would anyone mind elaborating on this? That would be amazingly helpful, considering I might be getting straight run chicks from a local farm. And can you sex chicks that are, say, a week old or less? How?