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J Acoust Soc Am. 2000 Aug;108(2):821-6.

A class of chaotic bird calls?

Author information

1
School of Aerospace and Mechanical Engineering, Australian Defence Force Academy, Canberra, Australia.

Abstract

Evidence is presented that the basic vocalized sound produced by some cockatoos, specifically the Australian sulfur-crested cockatoo (Cacatua galerita) and the gang-gang cockatoo (Callocephalon fimbriatum), has a chaotic acoustic structure rather than the harmonic structure characteristic of most birdsongs. These findings support those of Fee et al. [Nature (London) 395(3), 67-71 (1999)] on nonlinear period-doubling transitions in the song of the zebra finch (Taeniopygia guttata). It is suggested that syllables with chaotic structure may be a feature of the songs of many birds.

PMID:
10955649
DOI:
10.1121/1.429615
[Indexed for MEDLINE]

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