Publication Cover
Bioacoustics
The International Journal of Animal Sound and its Recording
Volume 1, 1989 - Issue 4
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Original Articles

ANNUAL CHANGES OF LEARNED BEHAVIOUR—VARIATION OF SONG PATTERN IN FREE-LIVING CHAFFINCHES, FRINGILLA COELEBS, DURING THE BREEDING SEASON

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Pages 273-286 | Received 14 Mar 1988, Accepted 22 Jun 1988, Published online: 13 Apr 2012
 

ABSTRACT

Seasonal changes of parameters of full song were studied in a free-living population of chaffinches Fringilla coelebs during one entire reproductive period. Approximately 7000 strophes sung by 14 male chaffinches were recorded and analysed by sonography and a particular oscillographic method. While the general pattern of song strophes, i.e. characteristics of elements, number and arrangement of phrases, and final flourish, remained constant throughout the reproductive period, full song varied with respect to the repetition rate of strophes, number of strophe types used, intensity of singing, duration of strophes, and percentage of incomplete strophes sung. These changes are discussed as results of learning processes, social interactions in the population, and endogenous mechanisms activating memorized information.

ZUSAMMENFASSUNG

In einer freilebenden Buchfinkenpopulation wurde untersucht, ob sich der Vollgesang während der Fortpflanzungsphase ändert. Annähernd 7000 Strophen von 14 Männchen wurden mit sonagraphischer und einer speziellen oszillographischen Methode analysiert.

Das Strophenmuster blieb sowohl nach Strophentyp als auch nach artspezifischen und individuellen Merkmalen erkennbar. Der Vollgesang änderte sich im Hinblick auf die Wiederholrate der Strophen, die Anzahl der verwendeten Strophentypen, die Gesangsintensität, die Strophendauer und den Prozentsatz an abgebrochenen Strophen. Diese Veränderungen werden als Ergebnisse von Lernprozessen, als die Auswirkungen von sozialen Wechselwirkungen in der Population bzw. als die Effekte innerer Mechanismen beim Abrufen der gespeicherten Information diskutiert.

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