When I went to my friends house Jack, he had some 5-6 week old RIRs and BR. They looked nothing like my 5 week old soon to be six week olds. I asked him if he was SURE that they were 5-6 week old, and he said he was positive. Are my chickens not really 5 weeks old? (I bought them when they were 2 days old.) Please answer this.