Hello. I've been lurking for about three weeks while my son and I have been building our coop and getting things ready for our first chicks. Well, we picked them up yesterday. They were advertised as RIR's and when I went to get them, not knowing better, I asked for all pullets (5). The chicks are 4 weeks old and the lady said she didn't know how to tell them apart. Since then I have read about sexing RIR's and now know it's almost impossible. She said she thought the ones with the smallest combs were female so we picked five with the smallest combs. Here is a picture. What do you think? BTW, chickens ARE adictive. I will get better pics today.