I have 5 chickens that are around 33 weeks. They all lay eggs but 1. One of my barred rocks still has a small comb. She also went through some kind of moult because a lot of her feathers just finished growing back. I'm guessing that's why she isn't laying yet. She also acts slightly different than the others. She always has her feathers puffed out and her neck more tucked into her body....hard to explain. She isn't as active as the others but doesn't look sick or anything. I feed them organic layer feed and ferment some of it for them. Think she will just need more time?