. ▁The ▁st outer ▁bill ▁is ▁mainly ▁what ▁war r ants ▁generic ▁separation ▁from ▁F reg il up us . ▁In ▁ 2 0 1 4 , ▁the ▁British ▁p ala e ont ologist ▁Julian ▁P . ▁H ume ▁described ▁a ▁new ▁ext inct ▁species , ▁the ▁Maur it ius ▁star ling ▁( C rypt ops ar ▁is ch yr h yn chus ), ▁based ▁on ▁sub f oss ils ▁from ▁Maur it ius . ▁It ▁was ▁shown ▁to ▁be ▁closer ▁to ▁the ▁Rod rig ues ▁star ling ▁than ▁to ▁the ▁ho op oe ▁star ling , ▁due ▁to ▁the ▁features ▁of ▁its ▁sk ull , ▁stern um ▁and ▁hum er us . ▁Until ▁then , ▁the ▁Rod rig ues ▁star ling ▁was ▁the ▁only ▁Mas car ene ▁passer ine ▁bird ▁named ▁from ▁foss il ▁material . ▁H ume ▁noted ▁that ▁Gün ther ▁and ▁Newton ▁had ▁not ▁designated ▁a ▁hol ot ype ▁spec imen ▁among ▁the ▁foss ils ▁they ▁based ▁the ▁specific ▁name ▁on , ▁and ▁chose ▁the ▁sk ull ▁from ▁their ▁s ynt ype ▁series ▁of ▁b ones ▁as ▁the ▁lect ot ype ; ▁spec imen ▁N M H UK ▁A 9 0 5 0 , ▁hous ed ▁at ▁the ▁Natural ▁History ▁Museum , ▁London . ▁H ume ▁also ▁identified ▁other ▁b ones ▁dep icted ▁by ▁Gün ther ▁and ▁Newton ▁among ▁museum ▁collections , ▁and ▁designated ▁them ▁as ▁par ale ct ot ypes . ▁ ▁In ▁ 1 8 9 8 , ▁the ▁British ▁natural ist ▁Henry ▁O gg ▁For bes ▁described