I have 3 RIR's and only one is laying. They are 24 weeks. We've been getting eggs from one for about 2 weeks now. One of my other girls is squatting, so I think she's getting closer. We live in NC and these girls are HOT! It's been in the upper 90's for weeks and they pant a LOT! I give them cool treats when I can. They have plenty of access to shade, free range and have nice clean cool water. Can the heat impact their initial egg-laying?