Narrator
David Attenborough 5: Forest Acoustics
The leaves, twigs and trunks of trees, blades of grass, and leaf litter on the forest floor can affect an animal's call.
Peter Marler , Rockefeller University, New York,
Eugene Morton , National Zoological Park,
Washington DC, Haven Wiley , University of North Carolina, and John Krebs , University of Oxford, describe how animals overcome the constraints of the environment.
Producer MICHAEL BRIGHT BBC Bristol