Figure 1

Boxplot of scores (range of values: 1-5) for the 13 individual plumage traits observed in 254 Saltmarsh, Nelson’s and hybrid individuals in this study, distributed across genotypic class: pure Nelson’s Sparrow (A), backcrossed in the direction of Nelson’s (B), backcrossed in the direction of Saltmarsh (C), and pure Saltmarsh Sparrow (D). R values are provided above each plot indicating the strength of the correlation for each plumage trait when regressed against the genetic data (hybrid index).

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