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6 results for “Bengalese finch”
Data from: Diet and birdsong: short-term nutritional enrichment improves songs of adult Bengalese finch males
Song is a notable sexual signal of birds, and serves as an honest indicator of male quality. Condition dependence of birdsong has been well examined from the viewpoint of the developmental stress hypothesis, which posits that complex songs assure fitness because learned acoustic features of songs are especially susceptible to early-life stress that young birds experience in song learning periods. The effect of early stress on song phenotypes should be crucial, especially in age-limited song learners which sing stereotyped songs throughout life. However, little attention has been paid to non-learned song features that can change plastically even in adulthood of age-limited song-learners. Although it has been shown that food availability affects song rate in wild songbirds, there is limited evidence of the link between favorable nutritional conditions and song phenotypes other than song rate. Under the prediction that singing behavior reflects an individual's recent life history, we kept adult Bengalese finch males under high-nutrition or normal diet for a short term, and examined changes in body mass and songs. We found that birds on a high-nutrition diet showed higher song output (e.g. song rate and length) compared with those of the control group, while changes in body mass were moderate. In addition, note repertoire became more consistent and temporal structures got faster in both nutrition and control groups, which indicates that songs were subject to other factors than nutrition. Considering that female estrildid finches, including Bengalese and zebra finches, show a preference toward complex songs as well as longer songs and higher song rate, it is plausible that different aspects of singing behavior signal different male qualities, and provide multifaceted clues to females that choose mates.
Data from: A simple explanation for the evolution of complex song syntax in Bengalese finches
The songs of Bengalese finches (Lonchura striata var. domestica) have complex syntax and provide an opportunity to investigate how complex sequential behavior emerges via the evolutionary process. In the present study, we suggest that a simple mechanism, i.e., many-to-one mapping from internal states onto syllables, may underlie the emergence of apparent complex syllable sequences that have higher-order history dependencies. We analyzed the songs of Bengalese finches and of their wild ancestor, the white-rumped munia (Lonchura striata), whose songs are more stereotypical and simpler compared to those of Bengalese finches. The many-to-one mapping mechanism sufficiently accounted for the differences in the complexity of song syllable sequences of these two strains.
Data from: A simple explanation for the evolution of complex song syntax in Bengalese finches
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Data from: Diet and birdsong: short-term nutritional enrichment improves songs of adult Bengalese finch males
Open the record for dataset details and reuse information.
Bengalese finch
Drawing uploaded to scidraw.io on: 18 August 2019
Bengalese finch
Drawing uploaded to scidraw.io on: 18 August 2019
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