Engbring, J. 1983. Avifauna of the South West Islands of Palau. Atoll Research Bulletin 267: pp. 24. Publication Year 1983 Colonies Surveyed (6) Palau EEZ - Colony: Tobi Island View Colony Palau EEZ - Colony: Sonsorol Islands View Colony Palau EEZ - Colony: Merir View Colony Palau EEZ - Colony: Helen Island View Colony Palau EEZ - Colony: Fanna Island View Colony Palau EEZ - Colony: Anna Island View Colony