Studies of vocalizations in a montane population of Green-Tailed Towhees were conducted during the summer months of 1971 and 1972 in Cache County, Utah. The song and call repertoiries of 10 breeding pairs were recorded and analyzed on a sound spectograph.
Males averaged 8.7 different song and 18.2 different not types. Song variation on the population level is high (58 different songs) but the sharing of these songs among the males is low (22.4) . Populational note structure is equally diverse but reveals a greater degree of sharing (75%).
Both males and females used three calss, the meow, tick, and poitt, whereas at least three more, the rattle, tst-tst-tst, and skee-skee-skee, are used only by the female.
Recoginition of the songs of conspecifies apparently is promoted by the distinctive introductory note, the duration of the song and the abruptness of changes within it.
| Identifer | oai:union.ndltd.org:UTAHS/oai:digitalcommons.usu.edu:etd-3485 |
| Date | 01 May 1974 |
| Creators | Burr, Timothy Andrus |
| Publisher | DigitalCommons@USU |
| Source Sets | Utah State University |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | All Graduate Theses and Dissertations |
| Rights | Copyright for this work is held by the author. Transmission or reproduction of materials protected by copyright beyond that allowed by fair use requires the written permission of the copyright owners. Works not in the public domain cannot be commercially exploited without permission of the copyright owner. Responsibility for any use rests exclusively with the user. For more information contact Andrew Wesolek (andrew.wesolek@usu.edu). |
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