I am new to chicken keeping and now have 7 pullets at about 17 weeks ( I think) and am wondering if their age is correct. They still have small combs and hardly any wattles and what they do have are still pink not red at all. I have 1 white leghorn, 1 black australorp, 1 faverrolles, 1 buff cochin, 1 welsummer, 1 maran (who is younger by about 1 month at least) and one mutt. I am not really sure about their age because the person I got them from didn't seem the type to have really good records and was rather vague. Was hoping that by looking at the developement of their combs and wattles I could better judge their ages. Any thing I should be looking for? Thanks for your help.