Figure 2 Median joining network of starlings from the native range (United Kingdom, black) and three invasive populations (North America, dark gray; Australia, white; South Africa, light gray) constructed using 928bp of mitochondrial control region haplotypes. Median vectors are shown as small black dots. Distance between each node is equal to one mutation, except where noted by hashmarks. Circle size indicates haplotype frequency. Asterisks denote haplotypes that contain polymorphisms in the 1181bp data set (see Table S4).