A LITTLE BIT LOUDER NOW.

KILLER whale; WHALES; ANIMAL communication; ANIMAL behavior; ANIMAL sounds; ANIMAL sound production; BIOACOUSTICS; FOOTE, Andrew H. (Andrew Hull), 1806-1863

Discusses the research of Andrew Foote and his team at the University of Durham in England on how killer whales off the coast of Washington State have changed their calls to communicate with each other. Analysis of underwater recordings made during the past three years; How orca calls become longer when a high number of boats are present; Link between animal communication and the presence of boats; Findings from researches in the Netherlands that city birds near heavy traffic sing at higher pitches.