Why do chickens like to roost as high as possible? Safety, warmth, dominance, all of the above, other reasons? Any body know of any studies on this? Do all chickens like to roost as high as possible? Currently only one-third of my small flock (5 out of 15) are night roosting on the highest roosts (a little over 5 feet up) and two out of the five of those roosting are the heavier breeds (Barred Rock, Cuckoo Marans). None of the lightest breed (Silkies) are roosting. Half of of the mid-size breed (Polish) are roosting.They're all only about 2 months old.