What is the importance of the "singing bird" in the novel, Indian Captive: The Story of Mary Jemison?

The symbol of a singing bird is important and evident on the song Molly that her mother had taught to her. The song of a bird can be happy or sad. In Molly’s song, sadness drives her to sing. Later, Shagbark makes Molly a ladle with the carving of a singing bird on the handle. This song bird is meant to bring about happiness. When she receives it, Molly says, “A singing bird—to keep Corn Tassel—always—happy!” (101). Shining Star explains to Molly that the Indian babies wrapped tightly in the blankets listen to and mimic the sounds of the birds. This is a happy thing. Even Shining Star’s baby is named Blue Jay because as an infant he can imitate the sound of this bird.