Summary of migrant assignments based on STRUCTURE, GENECLASS (migrants based on **α0.01 and *α0.05 type I error levels) and BAYESASS analyses.

Q assignments depict individual membership to each of the four STRUCTURE identified population clusters of Melghat-Satpura-Tadoba (MST), Pench (P), Kanha-Achanakmar (KA), and Bandhavgarh (B). Migrant probability refers to the P value of each individual to its cross- assigned population. The assignment likelihood of each migrant to a likely candidate parent and its source population is shown by CERVUS log (LOD) scores. Italicized individuals depict potential migrants identified unanimously by all three programs. Localities depicted include Melghat (MTR), Satpura (STR), Pench (PTR), Kanha-Pench corridor (KPC), Kanha (KTR) and Tadoba (TATR).†Tigers reported dead during the study period, M-Male, F-Female, NE- not established.Summary of migrant assignments based on STRUCTURE, GENECLASS (migrants based on **α0.01 and *α0.05 type I error levels) and BAYESASS analyses.