I see this question was posted by someone back in June and no one answered. Hope someone will this time as I have the same question. My flock of 13 ranges in age from 11 weeks to six weeks. I can tell the two older ones must be one of each as the point of skin above the beak is larger on one than the other. I believe this is called the snood? Is this a relaiable way to tell which is which? Are there any other visual clues to look for? Of the others 4 are 7 weeks and 7 are six weeks. Any info would be helpful. Also if anyone does know, please answer the other post as well. Thanks