Although conspicuous, these cockatoos were shy and did not allow close approach. Note pale yellow wash on undertail coverts and short triangular crest. The eyering is blue skin, technically a periophthalmic ring. This species is often called Solomons Corella or Solomons Cockatoo and is endemic to the Solomon Islands. Here at Guadalcanal it reaches the southern limit of its range. Its breeding biology was unknown until 1997 when several nests with young in high natural tree cavities were described. Canon PowerShot SX60.
References:
Dutson, G. (2011) Birds of Melanesia, Christopher Helm, London.
Gregory, P. (2017) Birds of New Guinea, Including Bismarck Archipelago and Boughainville. Lynx Edicions, Barcelona.
Juniper, T. & Parr, M. (1998) Parrots: A Guide to Parrots of the World. Yale Univ. Press, New Haven and London.
Rowley, I. & Boesman, P. (2019). Solomons Corella (Cacatua ducorpsii). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/54419 on 26 November 2019).
Webb, H.P. (1997) Nesting and other observations of Solomon Island birds. Austr. Bird Watcher 17:34-41.