▁became ▁ext inct ▁during ▁pre history ▁of ▁the ▁Southern ▁Pacific ▁region ▁( c . ▁ 1 3 0 0 0 ▁BC ▁– ▁ 1 4 0 0 ▁BC ). ▁ ▁The ▁b ones ▁of ▁P amp us ana ▁are ▁distinct ▁enough ▁to ▁usually ▁recognize ▁this ▁genus ▁with ▁ease . ▁Still , ▁the ▁evolution ary ▁affili ation ▁of ▁ext inct ▁species ▁is ▁often ▁uncertain . ▁A ▁considerable ▁number ▁of ▁recogn iz ably ▁distinct ▁now - ext inct ▁Pol yn esian ▁tax a ▁used ▁to ▁inhab it ▁the ▁area ▁where ▁the ▁white - head ed ▁line age ▁( P . ▁job i ensis , ▁P . ▁er yth rop tera ) ▁and ▁the ▁Mel anes ian ▁expansion ▁that ▁brought ▁about ▁P . ▁san ct a ec ru cis ▁and ▁P . ▁st ai ri ▁( and ▁possibly ▁P . ▁rub esc ens ) ▁would ▁have ▁met . ▁ ▁These ▁ground - d ov es ▁were ▁removed ▁from ▁Gall icol um ba ▁( which ▁was ▁non - mon oph y let ic ) ▁and ▁re ass igned ▁here . ▁ ▁List ▁of ▁species ▁The ▁genus ▁contains ▁ 1 3 ▁species ▁of ▁which ▁ 3 ▁became ▁ext inct ▁in ▁historical ▁times : ▁W et ar ▁ground ▁dove , ▁P amp us ana ▁ho ed ti i ▁ ▁White - bre asted ▁ground ▁dove , ▁P amp us ana ▁job i ensis ▁ ▁White - front ed ▁ground ▁dove , ▁P amp us ana ▁k ub ary i ▁ ▁Pol yn esian ▁ground ▁dove , ▁P amp us