I have been raising chickens a long long time, and have broodies that raise chicks without pasty butt, but always had the problem with the GQF box brooders and the heat lamps, the lights are always on. But bought a Brinsea Brooder because it uses only 20 watts in comparison to the 240 watt lamps, no pasty butt whatsoever with the Brinsea, I suspect its because when it gets dark they go under the Brinsea and sleep the whole night long and get back up with the sun, more natural I think. Any thoughts on why?
We also had zero pasty butt when we switched over to the Brinsea Brooder. I don't know why either. I think it's just more natural, like a broody. I had read that the red light keeps the temp too high, all the time, and that seems to add to pasty butt numbers.