My flock has been dutifully returning to their coop each evening. I fill their water, close their door and let them out again in the morning. Yesterday morning, I had a dead pullet, a black splash cochin, when I went to let them out. That one always seemed weak, so I am not surprised. Two nights ago, DH saw a large snake in the barn, but not in the coop (coop is a converted horse stall). I don't know if either of those events had anything to do with it, but both last night and tonight, my older girls ( six 18 wk old RIRs and one BR) were roosting on our copper recycling barrel and the younger kids (2-3 month old chicks and poults) were all piled together in the grass near the barnyard fence. Another possible contributor is that they were locked in the coop 24/7 while I was out of town and had a neighbor feeding them once every day. But, they've come back in for at least week since I've been home, so I am not sure that's part of it. Any ideas on why they aren't returning to their coop or how to get them to do it? It's pretty tedious collecting 30-some birds each night and putting them each in the coop.