The Manu 'Ō'ō was glossy black with yellowish tufts and plumes. It was valued by Hawaiians for its golden feathers, which were used to make feather capes, helmets, and other ornaments for the ali'i. Bird catchers would smear sticky sap on the branches of the Ohi'a and when an 'Ō'ō landed on the sap it would be held fast in the sticky trap. The feathers were then carefully plucked, only removing a few at a time, and then the bird was released unharmed. The Manu 'Ō'ō is now believed to be extinct, with its last known sighting in 1934 on the slopes of Mauna Loa.