I have 8 Chickens that are all 7 weeks old. They have been spending days outside in their coop and run, but I am bringing them indoors during the nights. It is typically between 40-75 during the day (yes, this is life in spring in Colorado) and can be anywhere from 20-40 degrees F at night. They do great during the day, even on the chillier days they lay in the sun, perch on their swing, and eat and eat and eat. I am not sure if they are ready to spend the nights outside, or if i should continue bringing them inside until it warms up a bit (probably 2-3 more weeks until we have nice night-time weather). ANY advice is greatly appreciated. Thank you!