Median-joining networks. Median-joining networks connecting haplotypes found in populations of Brown-cheeked and Water Rails for three molecular markers a) COI; b) ADH5; and c) PTPN12. Circles represent individual haplotypes listed in Figure 1. The sizes of the circles are proportional to the number of individuals (in A), or alleles (in B and C) found to possess each haplotype, and the color code corresponds to sample locality. Undashed network branches correspond to single nucleotide substitution between the adjacent haplotypes, and dash marks along branches correspond to additional mutational steps connecting the adjacent haplotypes.