I am new to raising Chickens and Have a cluch of 7 chickens that include 6 pullets and a rooster. I have 1 Barred Plymouth Rock, 2 rhode Island Reds, 2 Black stars(I think) and a Red Star. I have had them for 20 weeks tomorrow and I got my first egg yesterday and then another today. I don't know who laid the first egg but I caught pullet responsible for todays egg in the act. It was one of my RIR. so I am thinking either the first egg came from the Other RIR or the same pullet that laid todays egg. What seems weird to me is that I thought my Red and Black stars would be my first to lay. I was under the impression that they would start between 16-22 weeks and the RIR would start until 22-25 weeks. My RIR seem to have much more defined combs but the Red star has a pretty defined comb too. the black stars however don't really have any comb to speak of yet. Do you think my RIR are not true RIR and some other breed or did I miss something? Thanks for the help.