About 5 weeks ago I got 4 chicks that were ?? old. The next week 3 of the 4 started to crow. I thought they were about 4 wks when I got them but do they crow at 4-5 wks old? Anyway this one has yet to crow and I thought he was a he too.... just slow to mature or was I wrong. I am guessing he would be about 9-10 wks old now. They are mixed chickens with some EE mixed in. Sorry for the quality of photos- it was getting dark last night. Thanks! Should have mentioned his comb/ waddles have been exactly the same since I got him.