I'm not entirely sure which specific 'black rail my first story' you are referring to. There could be many stories related to black rails. It might be a personal story about encountering a black rail for the first time, perhaps in a natural setting like a wetland where they are often found.
Perhaps 'black rail my first story' is a title given by someone to their own experience. For example, it could be about a scientist's first encounter with a black rail during a research project. They might have been observing the black rail's behavior, its nesting habits, or its interaction with the environment. This story could detail the excitement and challenges of that first encounter, like trying to get close enough to study it without disturbing it.