I have lusted for a couple/three dark Brahma hens for awhile now, actually since I saw my first picture. I live in N TX, summer temps consistently over a hundred June until Labor day. It is a dry windy heat. Last summer was my first year, and I lost 2 birds to heat exhaustion, a black EE and one of the Cuckoo Marans. Almost lost the Speckled Sussex. I have improved their coops to keep them cooler this year (already have had 100 degree days) but I don't want to get these beauties if they will suffer from heat. Any experiences?