Global patterns of plumage color evolution in island-living passeriform birds.

ABSTRACT: Island environments have the potential to change evolutionary trajectories of morphological traits in species relative to their mainland counterparts due to habitat and resource differences, or by reductions in the intensity of social or sexual selection. Latitude, island size, and isolation may further influence trait evolution through biases in colonization rates. We used a global dataset of passerine plumage color as a model group to identify selective pressures driving morphological evolution of island animals using phylogenetically-controlled analyses. We calculated chromaticity values from red and blue scores extracted from images of the majority of Passeriformes and tested these against the factors hypothesized to influence color evolution. In contrast to predictions based on sexual

SUBMITTER: Oud MD 

PROVIDER: S-EPMC10723677 | biostudies-literature | 2023

REPOSITORIES: biostudies-literature