1. Ali, S., and Ripley, S. D. (1969). ‘Handbook of the Birds of India and Pakistan. Vol. 3.’ (Oxford University Press: Oxford, UK.)
2. Seabirds of the Southern Lagoon of New Caledonia; Distribution, Abundance and Threats
3. Bregulla, H. (1992). ‘Birds of Vanuatu.’ (Anthony Nelson: Oswestry, UK.)
4. Carey, G. J., Chalmers, M. L., Diskin, D. A., Kennerley, P. R., Leader, P. J., Leven, M. R., Lewthwaite, R. W., Melville, D. S., Turnbull, M., and Young, L. (2001). ‘The Avifauna of Hong Kong.’ (Hong Kong Bird Watching Society: Hong Kong.)