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Seasonal Changes in Colour: A Comparison of Structural, Melanin- and Carotenoid-Based Plumage Colours

Figure 3

Seasonal variation in blackbird coloration.

See legend of Figure 2 for more details. Note that the ΔS and ΔL graphs for the bill have not been drawn to the same scale as the plumage patches.

Figure 3

doi: https://doi.org/10.1371/journal.pone.0011582.g003