Birds are always in sync. They always arrive and leave at the right time.
Seven years ago, my parents were driving in the French countryside, where they live.
My dad noticed a black shape on the side of the road. As he got nearer, he found himself looking into the eyes of a fledgling crow who was laying there, near a roundabout. She was only a few weeks old and completely on her own, with no parents in sight or earshot.