Why Do Birds Sing? Nova : Season 2 Episode 1
TV-PG PBS 1h 00m
Aired: November 3rd, 1974 @ 9:00 PM EST on PBS
NOVA travels to forests and marshes to discover why birds sing and finds surprising parallels with the acquisition of speech in humans.
TV-PG PBS 1h 00m
Aired: November 3rd, 1974 @ 9:00 PM EST on PBS
NOVA travels to forests and marshes to discover why birds sing and finds surprising parallels with the acquisition of speech in humans.
