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. 2016 Sep 21;118(1):21–30. doi: 10.1038/hdy.2016.77

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Frequencies of colour phenotypes in skerry populations from 4 months after the manipulation in 1992 to 2013 (solid lines). Fitted declines in frequencies under a model of frequency-dependent selection (broken lines). Populations are coded as follows. (Top) White-1, blue; White-2, green; White-3, purple; White-4, red. (Mid) Banded-1, blue; Banded-2, green; Banded-3, purple. (Bottom) Red, blue.