THE VOCAL REPERTOIRE OF THE GREY CROWNED CRANEBALEARICA REGULORUM GIBBERICEPS. II: THE UNISON CALL
作者:
C. BUDDE,
期刊:
Bioacoustics
(Taylor Available online 1999)
卷期:
Volume 10,
issue 2-3
页码: 191-201
ISSN:0952-4622
年代: 1999
DOI:10.1080/09524622.1999.9753430
出版商: Taylor & Francis Group
关键词: vocalization;Grey Crowned Crane;Balearica regulorum;unison call;captive breeding
数据来源: Taylor
摘要:
This paper presents the acoustic features and the behavioural context of the unison call of the East African Crowned CraneBalearica regulorum gibbericeps.It speculates on the different functions of the unison call according to the situations where it is given. This is tested with the appeasement-threat hypothesis, which claims that the threatening acoustic characteristics of the unison call should be enhanced if it is given as a territorial call. In comparison, the appeasing acoustic characteristics should be stronger if the unison call is performed at flock sites where it possibly serves for mate assessment.
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