My chickens love to roost high, I had a step up roost with three rungs but all tried too fit on the top one. So I made more and higher roosts for them and gave them a latter to climb to get up to the top. In the morning they jump off instead of climbing or hopping down one rung at a time. The roost is over six feet tall. they hit the ground hard as i have clipped one wing so they dont fly out of thier run (five foot high). ANy suggestions? I worry about injury--my rooster has been limping and I wonder if this is the cause. Should I lower the roosts?