I'm looking for any tips or advice on getting chickens to use the roost at night. I have two girls who won't use the perch when they go to sleep. The perch is already used by the two older ones and the youngest of the group is using the edge of the nest box to perch. For the past couple of days I've gone out there around ten to place them on it but how long do I have to keep it up? I'll try to get some photos of the inside of the coop as soon as possible. Thank you.