My chickens will not roost and they are about 3 months old. They actually knock the roost pegs out of the holes they are sticking in in the coop. They love to huddle on the floor if I make them go in the coop. I have put them on the roosts and they just get right back down. Also, for at least 6 weeks I've been putting them in their coop each night. After all that time, if I don't go get them and put them inside they will sleep on the deck rail. It's a PAIN to catch them all at night to put them inside. It's something that involves the whole family and lots of running around like we're crazy! I started feeding them around 8PM when it's about time to put them up. For a while, they went straight in when I fed them but now they don't even do that... it's like they're on to me. Last night I waited till they were good and asleep, then I snuck up and grabbed all four of them at once and put them up. It's easy this way, but I don't want to stress them out too much.