Large terrestrial bird with chestnut coloring, green crest, large curved bill, white wings.
IUCN Conservation Monitoring Centre, viewed in July 2000, "Threatened Animals of the World", IUCN Red List of Threatened Animals
Langrand, Olivier; 1990: Guide to the Birds of Madagascar, Yale University Press
Sinclair, I & Langrand, O.; 1998: Birds of the Indian Ocean Islands, Struik