Additional file 1.

Supplementary information: Nested model analysis test values (2LLR) and corresponding p-values. df = degrees of freedom. * = 2LLR test statistic follows a mixed chi-squared distribution (Hey & Nielsen 2007). Allopatry 1 = Spanish pied flycatchers and Italian collared flycatchers, Allopatry 2 = Spanish pied flycatchers and Hungarian collared flycatchers, Sympatry = pied flycatchers and collared flycatchers from the Baltic Sea islands, Species = samples from all four populations combined for each species, respectively. (PDF 65 kb)

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Backström et al. BMC Evolutionary Biology 2013 13:2   doi:10.1186/1471-2148-13-2