I'm beginning to get concerned and impatient! I'm reading here where normal hens are laying as early as 15 weeks. My girls are over 19 weeks old, I have 4 Rhode Island Reds, 4 Buff Orpingtons, and 4 Barred Rocks. I am new to chicken raising but I am confident that I take extremely good care of my hens. I think that I have done all my homework and I read here a lot. My is coop/run is new, beautiful and clean, the girls are healthy looking very friendly hens who always have fresh food & water, daily garden greens, periodic treats, and access to free choice grit. I did introduce two 10 week old baby roosters to the coop about 3 weeks ago, but this didn't seem to bother anyone much because the roosters had been free ranging outside the fence for a month, so they were used to each other. I feed Purina Flock Grower for higher protein (20-21%) and last week I added free choice oyster shell to the coop for calcium....just in case they decide to lay sometime soon. They are not doing the crouching/squatting thing yet that I read about on a few posts here. I also don't have any additional lighting source for them but I think that they get plenty of sunlight right now. I have heard a few people say that some girls just won't lay until the following spring, but I'd assume that, that might happen to just one or two not an entire flock. Am I doing something wrong that I am not aware of? You'd think that with the breeds I have that someone would have layed by now...any ideas?