I wish I had a room in the house with such stable temperatures! And bonus, the BR crosses will be sex-linked (females solid black, males black with a white dot at hatch). I want to get some barred birds, maybe cuckoo marans or maybe barred rocks, to add to my flock so that I can hatch sex-link chicks next year. We hatch mostly for meat for our freezer, but I'm sure I would be able to sell pullets as layers around here and if I knew that they were female at hatch I wouldn't have to feed them out for a few weeks before selling them as layers.
Yes, that would be brilliant