I raised my chicks in a lightless brooder. I thought it seemed more natural and the ecoglow worked great for 4. I didn't really expect it to have an impact on their behavior, but I think they react more to light than my previous hens.They are almost 12 weeks old and are intensely drawn to any light. One even hit the wall where my flashlight beam was shining at night. Tonight I woke them up by turning on a light that they noticed and they knocked each other off the perch trying to get to the. light. I had to go out and put them back up like when they were babies! Anyone experience this?