page_title: Broad-billed parrot
section_title: Diet
hierarchical_section_title: Broad-billed parrot / Behaviour and ecology / Diet
caption_attribution_description: Italiano: Fossil of Lophopsittacus - Took the picture at Naturalis, Leiden
context_page_description: The broad-billed parrot or raven parrot is a large extinct parrot in the family Psittaculidae. It was endemic to the Mascarene island of Mauritius in the Indian Ocean east of Madagascar. It is unclear what other species it is most closely related to, but it has been classified as a member of the tribe Psittaculini, along with other Mascarene parrots. It had similarities with the Rodrigues parrot, and may have been closely related.
  The broad-billed parrot's head was large in proportion to its body, and there was a distinct crest of feathers on the front of the head. The bird had a very large beak, comparable in size to that of the hyacinth macaw, which would have enabled it to crack hard seeds. Subfossil bones indicate that the species exhibited greater sexual dimorphism in overall size and head size than any living parrot. The exact colouration is unknown, but a contemporary description indicates that it had multiple colours, including a blue head, and perhaps a red body and beak. It is believed to have been a weak flier, but not flightless.
  The broad-billed parrot was first referred to as the "Indian raven" in Dutch ships' journals from 1598 onwards.
context_section_description: Species that are morphologically similar to the broad-billed parrot, such as the hyacinth macaw and the palm cockatoo, may provide insight into its ecology. Anodorhynchus macaws, which are habitual ground dwellers, eat very hard palm nuts. The Brazilian ornithologist Carlos Yamashita suggested in 1997 that these macaws once depended on now-extinct South American megafauna to eat fruits and excrete the seeds, and that they later relied on domesticated cattle to do this. Similarly, in Australasia the palm cockatoo feeds on undigested seeds from cassowary droppings. Yamashita also suggested that the abundant Cylindraspis tortoises and dodos performed the same function on Mauritius, and that the broad-billed parrot, with its macaw-like beak, depended on them to obtain cleaned seeds. Many types of palms and palm-like plants on Mauritius produce hard seeds that the broad-billed parrot may have eaten, including Latania loddigesii, Mimusops maxima, Sideroxylon grandiflorum, Diospyros egrettorium, and Pandanus utilis.
   
  On the basis of radiographs, Holyoak claimed that the mandible of the broad-billed parrot was weakly constructed and suggested that it would have fed on soft fruits rather than hard seeds. As evidence, he pointed out that the internal trabeculae were widely spaced, that the upper bill was broad whereas the palatines were narrow, and the fact that no preserved upper rostrum had been discovered, which he attributed to its delicateness. The British ornithologist George A. Smith, however, pointed out that the four genera Holyoak used as examples of "strong jawed" parrots based on radiographs, Cyanorhamphus, Melopsittacus, Neophema and Psephotus, actually have weak jaws in life, and that the morphologies cited by Holyoak do not indicate strength. Hume has since pointed out that the mandible morphology of the broad-billed parrot is comparable to that of the largest living parrot, the hyacinth macaw, which cracks open palm nuts with ease. It is therefore probable that the broad-billed parrot fed in the same manner.
caption: Mandible fragments in Naturalis
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