Thanks for the advice! Some summers it does get quite a bit hotter than 30 degrees, and that's usually when the chickens are doing the worst, but around 30 degrees is when they start panting and drinking more. We tend to get pretty cold, damp winters, and we've already got quite a bit of snow on the ground. So we do have a few chickens- like our Marans crosses- that take the winters really well, but seem to be boiling in their feathers during the summer. So I'm just looking to see if there are any chickens that take both hot and cold temperatures well.