. ▁ra per i ▁was ▁a ▁syn onym ▁of ▁P . ▁al bus . ▁The ▁orn ith ologist ▁Keith ▁Alfred ▁H ind wood ▁agreed ▁that ▁the ▁bird ▁was ▁an ▁alb ino ▁P . ▁mel an ot us ▁in ▁ 1 9 3 2 , ▁and ▁pointed ▁out ▁that ▁the ▁natural ists ▁Johann ▁Rein hold ▁For ster ▁and ▁Georg ▁For ster ▁( his ▁son ) ▁did ▁not ▁record ▁the ▁bird ▁when ▁Cook ' s ▁ship ▁visited ▁Nor folk ▁Island ▁in ▁ 1 7 7 4 . ▁In ▁ 1 9 4 0 , ▁H ind wood ▁found ▁the ▁Lord ▁How e ▁sw am phen ▁so ▁closely ▁related ▁to ▁the ▁Austral as ian ▁sw am phen ▁that ▁he ▁considered ▁them ▁sub species ▁of ▁the ▁same ▁species : ▁P . ▁al bus ▁al bus ▁and ▁P . ▁al bus ▁mel an ot us ▁( since ▁al bus ▁is ▁the ▁older ▁name ). ▁H ind wood ▁suggested ▁that ▁the ▁population ▁on ▁Lord ▁How e ▁Island ▁was ▁white ; ▁blue ▁Austral as ian ▁sw am ph ens ▁occasionally ▁arrived ▁( st rag gl ers ▁from ▁elsewhere ▁have ▁been ▁found ▁on ▁the ▁island ) ▁and ▁b red ▁with ▁the ▁white ▁birds , ▁account ing ▁for ▁the ▁blue ▁and ▁partially - blue ▁individuals ▁in ▁the ▁old ▁accounts . ▁He ▁also ▁pointed ▁out ▁that ▁Austral as ian ▁sw am ph ens ▁are ▁pr one ▁to ▁white ▁fe ather ing . ▁In ▁ 1 9 4 1 , ▁the ▁bi ologist ▁Ernst ▁May r ▁proposed ▁that ▁the ▁Lord ▁How e ▁sw am