Abstract
In most temperate zone songbirds, singing is solely a behavior of males. However, in some species, such as the Northern Cardinal (Cardinalis cardinalis), both sexes sing, and in both, songs are learned. The song of male and female cardinals sounds very similar to the human ear. Whether songs learned by the two sexes can be sexually dimorphic in acoustic structure has never been examined. In the present study, I carried out detailed analyses of the acoustic structure of male and female songs. Songs of the two sexes proved to be dimorphic with respect to the degree of syllable stereotypy and the amplitude of harmonics. These findings show that vocalizations that are learned by the two sexes can be sexually dimorphic.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
