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Science 14 March 1986:
Vol. 231. no. 4743, pp. 1297 - 1299
DOI: 10.1126/science.3945824
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Articles

Science, Vol 231, Issue 4743, 1297-1299
Copyright © 1986 by American Association for the Advancement of Science

articles

Bilateral syringeal interaction in vocal production of an oscine bird sound

S Nowicki and RR Capranica

The vocal organ, or syrinx, of oscine birds has two parts, each of which has generally been presumed to operate independently of the other. A significant counter-example is now demonstrated in the production of a common vocalization by the black-capped chickadee (Parus atricapillus), in which the two acoustic sources interact in a nonlinear fashion. This bird produces a sound with multiple frequency components that are heterodyne products resulting from cross-modulation between two signals, thus providing evidence that avian phonation can involve cooperative coupling between the two syringeal sources.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Novel vocal repertoire and paired swimbladders of the three-spined toadfish, Batrachomoeus trispinosus: insights into the diversity of the Batrachoididae.
A. N. Rice and A. H. Bass (2009)
J. Exp. Biol. 212, 1377-1391
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Science. ISSN 0036-8075 (print), 1095-9203 (online)