Hi everyone. Our chicks are nearing 4 months old and we have yet to let them out. We love the little buggers and are fearful we won't be able to herd them back in come dark. Just this week we went out to close their door after dark and found around 10 of them all bunched up in a corner of the run, had to carry each of them to their roost. So this has made us double fearful of letting them run free, all seem to have "bird brains". Please advise us where and how to begin.