New here and happily working my way through this thread (man, 168pages in just over a year!). I have two Buff Orps and two Rhode Island Reds. I think they are about 16-17 weeks old, but am not entirely sure as the woman who I bought them from in early June initially said that she'd have 12-week old Buffs ready for early June, but when I picked them up, she said that maybe they were born in early April, so would actually be 12-13weeks now. Confused.
However, I am seeing changes to my girls. My RIRs are now, in the last week, going from "peep-peeping" noises to almost grown hen "broooook" noises, though their wattles/combs are still small/pale. My Buffs are still "peep-peeping", but their faces/wattles/combs are getting larger/redder. So I'm not sure on this. I am seeing many photos of people's hens here and it looks like my girls could be closer to the 16-week mark than the 12-week mark. I can post an updated photo tomorrow.
Waiting for eggs too....