It so happens that the caterpillars of the Magellan birdwing feed on Dutchman's pipes (Aristolochia spp.), which mostly grow around the burial grounds of the Tao people. As adults, the butterflies seek out sea mangoes, which also grow near Tao graveyards, as a source of nectar. Since they are associated with the dead both as larvae and adults, they are considered inauspicious.
原來珠光鳳蝶幼蟲的食草「港口馬兜鈴」，大多生長在達悟族人安置往生者的地方，而成蝶的蜜源海芒果，分布地點也是達悟族的墳場區；從幼蟲到成蝶都與亡者「如影隨行」，因此被視為不祥之物。