Ingestive and vocal mechanisms in birds: A parallel?

Author(s): Rogers, L.

Journal/Book: Behav Brain Sci. 1998; 21: 40 West 20TH Street, New York, NY 10011-4211. Cambridge Univ Press. 528-529.

Abstract: Parrots prepare for vocalization by a vetro-caudal retraction of the larynx. This laryngeal movement, which ''frames'' vocal sequences, is similar to a movement used by pigeons as a preparation for suction drinking. The air-pressure events involved in such movements can trigger iether suction drinking or vocalization. This suggests a possible evolutionary link between these ingestive and vocal mechanisms.

Note: Editorial Scanlan J, Univ New England, Sch Biol Sci, Div Neurosci, Armidale, NSW 2351, AUSTRALIA

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