PURPOSE: To correlate the sounds of bird songs with their audio spectrograms.

DESCRIPTION: An audiotape containing four bird songs can be played while displaying overhead projector transparencies showing drawings of the birds and audio spectrographs of their songs. Birds included are: Mourning Dove, Blue Jay, House Wren, and Cardinal. This tape is instructive in learning what audio spectrographs are and how to interpret them. Using a reference book which has the spectrographs it is actually possible to identfy birds from their calls.

SUGGESTIONS:

REFERENCES: (PIRA unknown.) See Demonstration Reference File for sources.

EQUIPMENT: Cassette tape with player, transparencies.

SETUP TIME: None.