I have 7 14 week old pulleys and since I moved them to their coop they are not roosting on the perch, they instead sleep all huddled up in the corner of the coop. They used the little low starter perches I had in their brooder, I even moved those into the coop for them but they don't sleep on them or the main perch I put in. It's about 16 inches high, 2x4, the same height and style I built a number of years ago for other chickens I used to have. I can see a few small stains on it so I know they use it at times but every night when they go in they just huddle together on the floor. Aside from that they seem perfectly healthy and normal. Is this normal behavior and they will eventually get the hang of it? Just curious.