Fig. 1

(a) Maximum likelihood tree demonstrating phylogenetic relationships among mtDNA haplotypes of 45 captive milky storks based on 1,131 bp of the control region sequences. Numbers at the nodes represent the bootstrap values and posterior probabilities of maximum likelihood and Bayesian inference approaches, respectively. Clades that contain individuals with MCTH1, MCTH2, and MCTH3 haplotypes are shown in pink, blue, and orange, respectively. The scale bar corresponds to 5 substitutions per 100 nucleotide positions. (b) A minimum spanning haplotype network showing the genetic relationship among three unique haplotypes of Thai milky storks. mtDNA haplotypes of other related storks were also included. The size of the circle is proportional to the haplotype frequency. The number in parenthesis represents the mutation steps among haplotypes.