I have 12 chicks in a pen. Two roost 14 " off ground, 2x4 's layed flat. 6 J.G.'s, 3 R.I.R. , 3 Buff. Hatched END OF APRIL. They are STILL bunching in a pile in a corner at night. Have tried picking them up and putting on perch. It is comedy hour. Put 2 up one jumps down. Usually on top of the pile. Put one on roost 2 jump down. HELP ! I think I have roost dificit chickens.