Document Type
Article
Publication Date
3-1-2003
Journal / Book Title
Journal of Raptor Research
Abstract
We studied the acoustical characteristics of calls made by nestling American Kestrels (Falco sparverius). A total of 563 vocal samples was obtained from 88 chicks (49 males and 39 females) from 20 broods. Thirteen frequency, three numerical, and two temporal characteristics were measured using audio spectrography. Discriminant function analysis failed to distinguish the calls of male and female chicks, but univariate and principal component analyses suggest that vocal ontogeny proceeds more rapidly in males than in females. The acoustical characteristics of call notes changed in a consistent manner as nestlings matured, and by day 16 chicks produced calls similar to those of adults.
Montclair State University Digital Commons Citation
Smallwood, John A.; Dudajek, Valerie; Gilchrist, Sivajini; and Smallwood, Mary Anne, "Vocal development in American Kestrel (Falco sparverius) nestlings" (2003). Department of Biology Faculty Scholarship and Creative Works. 565.
https://digitalcommons.montclair.edu/biology-facpubs/565
Rights
This is an open access article under a creative commons attribution license.
Published Citation
Smallwood, J. A., Dudajek, V., Gilchrist, S., & Smallwood, M. A. (2003). Vocal development in American kestrel (Falco sparverius) nestlings. Journal of Raptor Research, 37(1), 5.