My husband built our roosting bars in the coop about 40" off the ground. Our chicks are 7 weeks old today. Last night, we had three of our plymouth white rocks get to the roosting bars via my DH knees, to shoulder, to head (!) and then to bars! He is so patient! Can chickens see well at night? Anyway, we were afraid to leave them on the bars over night, as we do not have a light out there at night anymore (night temps have been 70 degrees plus), and didn't want to risk them hurting themselves overnight by not being able to see how close/far away the floor was. We are getting a mechanics light to hang out there tonight with a low wattage bulb in there. Is this a silly worry? These are our first babies, and we are so careful about everything. Appreciate any feedback.