My littles (the First Ladies) loved roosting almost immediately once moved to their pen in the garage. Being fairly new to chickens, I disastrously put them in an open puppy pen Foolishly thinking thy would stay in. Long messy story short, They ended up roosting all over the garage, the higher...
When I got my original 4 girls last fall, they were already familiar with the whole roosting process. Then I got the new girls (two grown hens I added to the flock in march) and the drama began! I added an extra roosting bar and they sorted themselves within a couple weeks. But Lord have mercy...