Jenkins, J.A.F. 1980. Seabird records from Tonga-an account based on the literature and recent observations. Notornis 27:205-235.
Prescott, N. and P. S. Folaumoetu’I (Editors). 2004. Tonga Biodiversity Stocktaking. Technical Report 1 for the National Biodiversity Strategy and Action Plan. Dept. of Environment, Nuku’alofa.
Rinke, D. 1986b. The status of wildlife in Tonga. Oryx 20:146-151.
Rinke, D. 1991. Birds of ‘Ata and Late, and additional notes on the avifauna of Niuafo’ou Island, Kingdom of Tonga. Notornis 38: 131-151.
Stattersfield, A., Crosby, M., Long, A. and Wege, D. (1998). Endemic Bird Areas of the World: Priorities for Biodiversity Conservation. Cambridge, Birdlife Conservation Series No.7
WWF 2001. www.worldwildlife.org/wildworld/profiles/terrestrial/oc/oc0114_full.html