Abstract
Local resource competition arising through differential natal dispersal of daughters and sons may be an overlooked selection pressure on progeny sex ratio variation in birds. Passerines have predominantly daughter-biased natal dispersal; anseriforms have predominantly son-biased natal dispersal. Therefore, the local resource competition hypothesis predicts that passerines will have daughter-biased sex ratios and anseriforms will have son-biased sex ratios. These predictions are supported by observations of between-order variation in progeny sex ratios. Across latitude and within season, variation in progeny sex ratios of given species may also reflect selection through local resource competition arising in association with variation in relative son and daughter philopatry.
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.
