On designs for testing the effect of song repertoire size
Article Abstract:
An experimental design by Kroodsma for testing effects of song repertoire size need certain modifications. The designs must control for the effect of song type. The small number of song types for large and small repertoires in the proposed design may result in sampling errors. Selecting the repertoire of song types from the repertoire of a single individual may cause differences in response to the repertoire size classes. A design for large repertoire classes may be taken from different males but each song type must also be incorporated in those with small repertoire classes.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1992
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Extended song learning in wild European starlings
Article Abstract:
A study was conducted to explore the song learning behavior in adult European starlings by analyzing the repertoire size and composition of songs over the years. The results indicated that composition of birdsongs expanded as the birds grew older. However, some repertoire were dropped and some were modified. Results also showed that starlings begin songlearning between 11 and 12 months of age, but they develop bigger repertoires at four years old. Evidences also suggest that sexual selection among female starlings can be influenced by repertoire size of the males.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1995
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Response of eastern chipmunks to conspecific alarm calls
Article Abstract:
Experimental analysis of the response of eastern chipmunks, Tamias striatus, to conspecific alarm calls shows that chipmunks are sensitive and respond to alarm call characteristics, suggesting a degree of risk. Hearing alarm calls also increases the awareness of visual and auditory stimuli that indicate the approach of a predator. Multiple alarm callers evoke greater response than single callers, with the response to calls remaining similar in all individuals.
Publication Name: Animal Behaviour
Subject: Zoology and wildlife conservation
ISSN: 0003-3472
Year: 1995
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