Peep. It's baby bird season at Greenwood Wildlife Rehab Center

I scooped up some scrap hay at a barn where I kept my horse and noticed a dark spot in the midst of the pale green. Between my hands and the hay was a frail body no bigger than my thumb, a mix of black fuzz and feather. I looked up to the 40-foot rafters where I knew there was a barn swallow nest. This little one might have made a too-early attempt to fly or took a tumble after sibling scuffle.

At...