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September 27, 2025Open Access

Not all sexual monomorphisms evolve equally: female and male ornamentation in Tyranni passerines

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Authors

GMGabriel MacedoYCYuchen ChenSLSara E. Lipshutz

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Overview

Observational analysis reveals ornamentation patterns in Tyranni passerines, suggesting sociosexual selection impacts male and female traits.

Key Points

  • Elaborate monomorphism in Tyranni occurs when both sexes experience similar sociosexual pressures.
  • Males show greater ornamentation than females in migratory and polygynous species, highlighting sexual dimorphism.
  • In species with biparental care, females and males exhibit equally high ornamentation, indicating shared selection pressures.
  • The study provides a framework for how sociosexual selection influences the evolution of ornamentation in both sexes.

Cite This Study

Macedo et al. (2025) studied this question.

synapsesocial.com/papers/68d7be66eebfec0fc5237f34https://doi.org/10.1101/2025.09.23.678134
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