Mitochondrial Gene Genealogy and Gene Flow Among Island and Mainland Populations of a Sedentary Songbird, the Grey‐crowned Babbler (Pomatostomus Temporalis)

, the fraction of genetic diversity apportioned among populations, were obtained when calculated using the divergence times of alleles and when estimated from Nm values derived from trees and ranging from 0.29-0.55. Both the phylogenies and patterns of allelic divergence suggest that the population on Melville Island exchanges migrants with both continental populations, although statistical tests indicated that some alternative phylogenies implying restricted gene flow among the populations could not be discounted.