Is there anyway to mark chicks to keep track of them that is easy. I have all these chicks, but they all look a like and I want to be able to track them a little. I have 2 BO's one's primary feathers are 3/4" longer than the other. So what I want to do, is mark the ones I think are girls and then in a few weeks or months when I can really tell them apart, see how accurate I was. I don't want to toe punch or necessarily put on rings. I was just wondering if any of you had some good ideas.