So my wife and I bought our first 5 chickens like 4 days ago. (Sold our rooster and youngest pullet all Silkies) Bought 3 more chickens the next day. (All 3 are 9 months old but don't roost yet (Brahma and 2 Hertiages) We then bought 2 more yesterday. Well for the first 3 days everything is great, chickens are doing good they are all getting along. We bought 2 chickens yesterday both 9 months old. A Jersey Giant and an Ameraucana. We put our two news chickens in the coop and watch them for a bit to see how they will react with the other chickens. They all do great. We helped my wife's grandfather move a couch for him for about an hour. We get back home and I check on the chickens to check their food and water and make sure everyone is getting along. I open the coop door and all I see is our Brahma and Silkies. I looked in trees and around the neighbors yards and don't see anything. I get my wife and we walk around a bit to look for our missing chickens. (Note: I haven't put the top on our run yet and the door going into the run was still open) I put the top on right then. After a lot of searching we decide it's really cold and need to go back in because we both have to be up early, we should have seen some type of sign where the chickens would have went. We get back to our house and I take the water out to the coop to put in the water dish.... I open the door and the Brahma is gone... Then I see chicken poop fall from the ceiling rafters and hit the floor... All of our chickens were in the ceiling rafters roosting above the view from the door. Note the coop is only 6' tall from the floor to the ceiling but when you open the door you can't see the ceiling. We had thought all of our large chickens had flown out of the 6' tall run. Nope they were all chilling up in the rafters. Only chickens that didn't go up to the rafters are the Silkies but they are smaller 4 months old right now.