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Bill color, not badge size, indicates testosterone-related information in house sparrows
The honesty of ornamental signals of quality is often argued to be enforced via costs associated with testosterone. It is still poorly understood, however, how seasonal variation of testosterone within individuals is related to the timing and extent of ornament development. Here, we studied inter- a...
| Autores principales: | , , |
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| Formato: | Texto |
| Lenguaje: | English |
| Publicado: |
Springer-Verlag
2010
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| Materias: | |
| Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2920409/ https://www.ncbi.nlm.nih.gov/pubmed/20730125 http://dx.doi.org/10.1007/s00265-010-0961-9 |