Why is the mitzvah called Shiluach Haken if the mother bird is sent away rather than the nest?

This source-based Hagut Yosef essay explores the question: Why is the mitzvah called Shiluach Haken if the mother bird is sent away rather than the nest? The canonical Hebrew article develops the theme through Torah sources and reflection on human life. This localized discovery layer preserves the source’s meaning and identity and does not add new halakhic, historical, psychological, medical, legal, political, scientific, or empirical claims beyond the Hebrew source.