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Related Experiment Videos

Strain differences in auditory thresholds in the canary (Serinus canarius).

K Okanoya, R J Dooling

    Journal of Comparative Psychology (Washington, D.C. : 1983)
    |June 1, 1987
    PubMed
    Summary

    Belgian waterslager canaries, bred for loud, low songs, exhibit significantly poorer high-frequency hearing than other songbirds. This selective breeding has led to a notable deficit in their auditory perception of higher pitches.

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    Area of Science:

    • Ornithology
    • Animal Audiology
    • Behavioral Genetics

    Background:

    • Selective breeding in canaries (Serinus canarius) has produced distinct strains with unique vocal characteristics.
    • Understanding the sensory consequences of selective breeding is crucial for conservation and welfare.
    • Previous research has not extensively investigated the auditory capabilities of the Belgian waterslager canary strain.

    Purpose of the Study:

    • To assess the hearing abilities of the Belgian waterslager canary strain.
    • To compare the audiometric thresholds of Belgian waterslager canaries with other songbirds.
    • To determine if selective breeding for specific vocal traits has impacted high-frequency hearing.

    Main Methods:

    • Operant conditioning techniques were employed for audiometric testing in canaries.

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  • Two colonies of Belgian waterslager canaries (young and old birds) were included in the study.
  • Absolute hearing thresholds were measured across the middle- to high-frequency spectrum.

    • Main Results:

    • Belgian waterslager canaries demonstrated significantly elevated hearing thresholds in the middle- to high-frequency range.
    • Thresholds were 30–40 dB (Sound Pressure Level) higher compared to other songbirds.
    • This deficit was observed in both young and old birds from the studied colonies.

    Conclusions:

    • The Belgian waterslager canary strain, selectively bred for loud, low-pitched songs, possesses impaired high-frequency hearing.
    • Acoustic characteristics of song appear to be inversely correlated with high-frequency auditory sensitivity in this strain.
    • Further research is warranted to explore the genetic and physiological underpinnings of this auditory specialization.