I started my small flock of backyard chickens back in early May. I have three Buff Orpington hens and a Cherry Egger. I purchased them as chicks, and got them all at the same time. Two of the hens, the Cherry Egger and one of the Buff Orpingtons, started laying eggs back in late September. The other two have never started laying, and it's now mid-November. The two hens that are laying have much larger combs, however the two that aren't are otherwise the same size with regard to body mass - in fact, they are a little bigger! It's just that their combs are small - maybe 1/4" tall, compared to 1-1/2" to 2" on the other two. I'm new to all this, but that seems really weird to me. Maybe the smaller comb size and the fact that they're not yet laying is coincidental and unrelated? If I were to use this physical trait to judge relative age, I'd put the two non-layers a month or more younger than the others, but that doesn't seem possible (and I'm guessing probably not even accurate anyway.) Also, with winter right at our doorstep, is it possible that these two might not start laying until spring now?