Hi all, I have 5 pullets, 3 RIR and 2 Barred Rocks. The breeder I bought them from I could expect eggs by late July or early August. A few of the birds are larger than the others and therefor, older. My question is this....Can you tell by the size of the comb on a developing bird that it's getting close to start laying? Will the hen be mature in the way they look, ( full coloring, comb development, ect.) before they start laying? Thanks!