Parent: Amaurornis

└─ Amaurornis olivacea (Plain bush-hen)

└─── Amaurornis olivacea magnirostris

└─── Amaurornis olivacea moluccana

└─── Amaurornis olivacea nigrifrons

└─── Amaurornis olivacea olivacea

└─── Amaurornis olivacea ruficrissa

└─── Amaurornis olivacea ultima