Last year i bought 1 roo and 2 hens from paul smith that are blue wheatons and i have hatched out lots. Paul Smith birds are very good quality and usually win something. i also have some black and blue wayne meridith chicks around the age of yours but somewhat older and they were hard to tell on combs at first but at 4 months you should be able to distinguish male and female. Meanwhile watch for combs and faces to be redder, sickles coming in, hackles, saddles feathers, and spurs. ours are coming up on 3 months and they are easy to tell apart. pic #1 - EB (eager beaver) wheaton ameraucana roo pic 2 - blue ameraucana hen 3 months

