phen ▁was ▁a ▁partially - al bin istic ▁population ▁of ▁Austral as ian ▁sw am ph ens . ▁May r ▁suggested ▁that ▁the ▁blue ▁sw am ph ens ▁remaining ▁on ▁Lord ▁How e ▁Island ▁were ▁not ▁st rag gl ers , ▁but ▁had ▁surv ived ▁because ▁they ▁were ▁less ▁consp ic uous ▁than ▁the ▁white ▁ones . ▁In ▁ 1 9 6 7 , ▁the ▁orn ith ologist ▁James ▁Green way ▁also ▁considered ▁the ▁Lord ▁How e ▁sw am phen ▁a ▁sub species ▁( with ▁P . ▁stan ley i ▁a ▁syn onym ) ▁and ▁considered ▁the ▁white ▁individuals ▁al bin os . ▁He ▁suggested ▁that ▁the ▁similar ities ▁between ▁the ▁wing ▁fe athers ▁of ▁the ▁Lord ▁How e ▁sw am phen ▁and ▁the ▁tak ah ē ▁were ▁due ▁to ▁parallel ▁evolution ▁in ▁two ▁isolated ▁populations ▁of ▁rel uct ant ▁f liers . ▁ ▁The ▁orn ith ologist ▁Sid ney ▁D illon ▁Ri ple y ▁found ▁the ▁Lord ▁How e ▁sw am phen ▁to ▁be ▁intermediate ▁between ▁the ▁tak ah ē ▁and ▁the ▁pur ple ▁sw am phen ▁in ▁ 1 9 7 7 , ▁based ▁on ▁patterns ▁of ▁the ▁leg - sc utes , ▁and ▁reported ▁that ▁X - ray s ▁of ▁b ones ▁also ▁showed ▁similar ities ▁with ▁the ▁tak ah ē . ▁He ▁considered ▁only ▁the ▁Vienna ▁spec imen ▁to ▁be ▁a ▁Lord ▁How e ▁sw am phen , ▁whereas ▁he ▁considered ▁the ▁Liverpool ▁spec imen ▁to ▁be ▁an ▁alb ino ▁Austral as ian ▁sw am phen ▁( list ing