My flock is 25 weeks old. We have not yet had an egg layed. I have 3 RiRs, three BO, and a Barred Rock rooster. Oh and a mixed breed runt who was abandoned at the animal shelter and wound up with us. She is approx a month younger than the other hens. About a month ago I started leaving them out all day long (well, anywhere from 6-8 hours). They go into a pasture which is about an acre. I was not giving them any feed out there, I figured they'd hunt better if they didn't have a free meal. They would come in sometime in the afternoon and stay in their coop w/ feed, grit, etc. However, it is July in SW Florida and REALLY hot. They don't utilize their whole area b/c it's too hot, and they want to stay under the shade tree, and also b/c a lot of it is wide open with not cover and they don't feel safe out there I guess. I just started leaving them out even longer (almost sunup to sundown) so I started giving them some feed out there. They are really hungry and excited when I give it to them. Is it possible they haven't layed yet because they weren't eating enough? Or are they not laying because it is so hot? Will hens not start to lay if they mature during the heat of the summer? Anything else I might have missed? They have nice nesting boxes in their stall, but not outside. I am going to build them a portable one but I haven't had time yet. Every night when we bring them in we check scrupulously for eggs in their turnout area- I don't think we've missed any. We were hoping to have eggs by now.