I have 9 hens ranging from 11 months to 4 years. The youngest 4 started laying this past spring. One of these, a buff leghorn, quit laying about 2 weeks ago. I know because she is my only white egg layer. I know that she is not hiding eggs because I did not let them out of their secure run for several days. Her comb is no longer bright red. It looks like the comb of a hen who is molting, but she is not showing other signs of molting and I have never had one molt this time of year. Other than not laying, she seems to be healthy and happy. This is my first leghorn – they are supposed to be egg laying machines. Any ideas? Could the Louisiana heat be an issue? Their coop has a fan and is in the coolest, shadiest part of the yard.