I dont know but since we turned the dang thing on at night its a red light the rooster/s have begun crowing at like 1am and then all the hens start the egg laying song. kinda freaks me out when you wake up in the middle of the night to your chickens making noise cause I was told that they usually dont and if they are there is most likely something wrong! so I sit listening and usually I even get up in the chilly night with my flashlight and go peak at them. so is it the light being on thats doing this? or just some random occurance.