NOVA travels to forests and marshes to discover why birds sing and finds surprising parallels with the acquisition of speech in humans.
| Title | Why Do Birds Sing? |
|---|---|
| Genres | Documentary |
| Release Date | 1974-11-03 |
| Episode Runtime | 00 Hours 55 Minutes |
| Season Number | 2 |
| Episode Number | 1 |
| Production Companies | GBH |
No cast information available.
