In the 25th year of the BBC's Natural History Unit, the second half of a series in m parts... Narrator
David Attenborough
22: Low Rumblings and Grumblings
Sounds at frequencies well below the range of human hearing are used by some creatures for communication.
Don Griffin , of Rockefeller University, New York. Cynthia Moss. of New
York Zoological Society. Robert Moss , of Institute of Terrestrial Ecology. Banchory, and Douglas Quine , of Dalhousie University, Halifax, reveal how elephants greet each other, capercaillies court, and pigeons navigate using infrasound.
Written and produced by MICHAEL BRIGHT BBC Bristol