Jelaskan Bacaan lanjutan dari ‘Ō‘ō O‘ahu

Munro, George C. (1944 and its revised 2nd. edition from 1960): Birds of Hawaii

Flannery, Tim & Schouten, Peter (2001): A Gap in Nature

Fuller, Errol (2000): Extinct Birds

Day, David (1981): The Doomsday Book of Animals

Greenway, James C. (1967): Extinct and Vanishing Birds of the World

Luther, Dieter (2005): Die ausgestorbenen Vögel der Welt