I previously had two roosts in my henhouse, one at 2 ft tall and one at 4 ft tall. The girls have been plucking my BCM's feathers from her bum either when she's on the 2 ft roost, or when she's in the 4 ft roost and the others are on the 2 ft. I removed the 2 ft tall roost, but now I'm concerned that 4 ft is too tall all by itself. Will they hurt their feet hopping down? The roosts are 7 ft long, so plenty of room for all 4 girls. Thanks!