It has been turned into both a play and a movie about a girl called Mytyl and her brother Tyltyl seeking happiness. The Dutch school types Mytyl school and Tyltyl school are named after them. They are for children with a physical disability and for children with both a physical and mental disability, respectively.
Materlinck wrote a little known sequel to The Blue Bird, entitled The Blue Bird and the Betrothal.
2. The Blue Bird is also the title of a poem by Mary Coleridge. It has been set to music as a song by Sir Charles Villiers Stanford.