Figure 4.

Correlation between male and female throat color. Positive relationship between the local proportions of orange females and orange males in each of the eight study populations. The regression line y = 0.06 + 0.96*x is statistically significant (see text).

Runemark et al. BMC Evolutionary Biology 2010 10:269   doi:10.1186/1471-2148-10-269
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