The following supplementary material is available for this article:
Appendix A1. Characterization of microsatellite loci for Little Greenbul. Download here.
Appendix A2. Allelic variability of 10 microsatellite loci in 18 populations of Little Greenbul. Download here.
Appendix A3. Sample size for morphological comparisons for adult male Andropadus virens (N) and mean and standard deviation for six morphological characters for sampling sites in Upper and Lower Guinea. Download here.
Appendix A4. Summary table of Nei's Ds values (lower triangle) and Fst values (upper triangle) among study sites. Download here.
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