my chickens are 7 months old and aren't laying they are Sussex and Rhode island red .
The first 1-2 months they can be on and off to figure out their cycle. After 2 months it will be like clockwork.I completely feel your pain. Our chickens are about 24 weeks as well and only one has laid one egg, it was a double yolk which I assumed to be a good omen. It has been four days and we still have nothing. This is our first go with chicks and I am hoping we score big soon!
You never know, and it won't hurt to try. I got meat chicks and my girls started hanging out with them, next day I got my first egg. Then red waddles and combs growing everywhere and all but 2 of mine started laying within 2 weeks. Nature is a funny thing.I have 10 EE's that were shipped to us around April 10th. No eggs yet and I expected that we would see one around the 15th. They have me on pins and needles!
A local farmer advised touching their heads with an egg to start them laying. I love mountain lore! I am seriously starting to think about doing it!