VARIATION IN SONG STRUCTURE WITHIN AND AMONG POPULATIONS OF AUSTRALIAN ZEBRA FINCHES

Authors
Citation
R. Zann, VARIATION IN SONG STRUCTURE WITHIN AND AMONG POPULATIONS OF AUSTRALIAN ZEBRA FINCHES, The Auk, 110(4), 1993, pp. 716-726
Citations number
28
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Ornithology
Journal title
ISSN journal
0004-8038
Volume
110
Issue
4
Year of publication
1993
Pages
716 - 726
Database
ISI
SICI code
0004-8038(1993)110:4<716:VISSWA>2.0.ZU;2-#
Abstract
Zebra Finch (Taeniopygia guttata castanotis) songs from 33 colonies in two geographic zones of Australia (central and southeastern) were inv estigated in order to describe variation from macrogeographic to micro geographic levels. Canonical discrimination classified songs according to 31 measurements of the song phrase and clearly distinguished those from the two zones. Songs from regions within the southeastern zone f ell into two groups on element sequence and frequency of element types . The two song groups came from habitats that differ in aridity and tr ee cover; both factors affect dispersal. Song variation within and amo ng colonies in a region occurred in the frequency of ''labile'' elemen ts. Movements of birds among colonies are extensive, but patterns are still far from clear. Despite resemblance in song structure between so ns and their fathers, dispersal to and from colonies prevents the form ation of colony-specific versions of the song.