Two nights ago, one of my bantam roosters was not to be found. I figured he'd seen his last day. The next morning, there he was. So I figure he bedded under the barn or something. Last night, one of my bantam hens did not return to the coop, so I wondered what was going on. I found her 12 feet up in a tree apparently roosing for the night! I just shook my head and went inside. Is this normal?