Table 3 Posterior mode, mean and range of 95% highest probability distribution (HPD) of six demographic parameters inferred with IMa2p between C. alexandrinus and C. dealbatus. Divergence times (T) are given in million years ago (Ma). The effective population size (Ne) of C. alexandrinus was about eight times that of C. dealbatus. Migration rate (2NM) into each species was about the same. K represents Kentish Plover C. alexandrinus; W represents White-faced Plover C. dealbatus; A is the most recent common ancestor of two species