Lophopsittacus: the broad-billed parrot of Mauritius

Lophopsittacus mauritianus was a large parrot endemic to Mauritius. Its broad jaws, deep skull and prominent forehead are known from subfossil bones, while early Dutch images and descriptions provide independent evidence that people encountered the living bird in the seventeenth century. Together these records support its distinctive proportions more securely than its plumage or behaviour. The bird is often described as flightless, but both the skeletal evidence and historical accounts leave room for a very weak flyer rather than proving an absolute inability to fly. The extinct bird catalogue includes it among island birds known through a combination of fossils and historical testimony.

Quick facts

A large parrot from an island record

The species was formally named in the nineteenth century from bones found on Mauritius. Fossils from localities including Mare aux Songes and Le Pouce show a large, deep-headed parrot with a broad beak. These remains are not a complete articulated skeleton, but the cranial bones distinguish it from other parrots that inhabited the Mascarenes. The name Lophopsittacus combines roots commonly translated as “crest” and “parrot,” a reference consistent with the conspicuous forehead shown in historical depictions.

The fossil record is only one part of the evidence. Dutch accounts and drawings made during voyages in the early seventeenth century describe or depict the living broad-billed parrot. Those documents are valuable because they were produced before the species disappeared, yet they have limitations: artists simplified anatomy, descriptions used inconsistent names, and not every image can be tied with equal confidence to a single species. A reading that combines skeletal anatomy with the historical material is stronger than relying on either source alone.

In 1875 Alfred Newton established the genus name Lophopsittacus. Later taxonomic work revisited the smaller parrot once called Lophopsittacus bensoni. Julian Hume's 2007 review transferred it to Psittacula, based on comparative skeletal features. As a result, Lophopsittacus is treated as a genus containing the broad-billed L. mauritianus, rather than a catch-all for several differently sized Mauritian parrots.

What the jaws can suggest

The broad, powerful jaws could have handled substantial fruits or hard seeds. That is a functional interpretation of the beak, not a direct record of the bird's last meal. No stomach contents identify a particular plant, and the fossilised bones do not preserve the soft parts that would show how food was processed. The shape is consistent with strong biting, while the details of its everyday diet remain open.

Several historical images show a large head and a forehead crest. This makes the general silhouette more secure than it would be from bones alone, but neither the size of the crest nor the exact arrangement of feathers is preserved in a skin. Reports also differ in their descriptions of colour. Suggestions ranging from dark bluish-grey to more vivid combinations cannot be resolved from the surviving skeleton. A vivid reconstruction may be attractive, but it should be labelled as an interpretation rather than recovered fact.

Claims about body size likewise need restraint. The skull and jaw are strikingly robust compared with those of other Mauritian parrots, and eyewitness material depicts a substantial bird. Yet a precise body length or mass is difficult to calculate without a complete skeleton. It is safer to describe it comparatively as the island's large, broad-billed parrot than to repeat a single unqualified measurement.

Did the broad-billed parrot fly?

Lophopsittacus mauritianus is frequently called flightless. Historical observers reported that birds did not fly or were poor at it, and the skeletal proportions indicate a reduced flight apparatus. Those two lines of evidence point in the same direction, but the bones do not show that the wings had become as completely reduced as those of a strongly flightless parrot such as the kakapo. The most cautious description is that it was a weak flyer or perhaps behaviourally flightless; an absolute inability to make any short flight is harder to demonstrate.

Island evolution can favour reduced flight when food and shelter are available on the ground and there are few native mammalian predators. That general pattern can help explain why a large island parrot might invest less in flight. It does not prove the exact selective history of this species. Mauritius had its own changing forests, climate and animal communities, and no fossil series records each stage of wing reduction.

Its vulnerability to human arrival may nevertheless have been heightened by its size and limited escape response. A bird that spent substantial time on the ground and could not readily fly away would have been exposed to hunting and to introduced mammals. This is a plausible ecological mechanism, but it is not a witnessed account of how the last individuals were killed.

The last historical sightings

European accounts suggest that broad-billed parrots became less commonly encountered during the latter seventeenth century. The report associated with François Leguat is often discussed among late records, while the Dutch writer Pieter van den Broecke and other visitors describe Mauritian parrots earlier in the century. The final account usually cited comes from the journal of Johann Christian Hoffmann in the 1670s, but identifying every historical bird in such texts is not straightforward. None is a census of a known population.

Habitat change and hunting occurred alongside the arrival of introduced animals, including rats, pigs and macaques. These mammals could damage nests or alter access to food, while forest clearing and burning reduced native habitat. Several pressures acting together offer a reasonable explanation for the collapse of a large endemic parrot. The documentary record does not isolate one factor as the sole cause, and it does not give an exact extinction year.

By the close of the seventeenth century there are no secure later reports of living Lophopsittacus mauritianus. Its history is therefore reconstructed from scattered observations and subfossil bones: enough to identify a distinctive bird and understand some pressures it faced, but not enough to recover its colour, full behaviour or final moments.

There is an important difference between the last dated mention and the last individual. Historical journals record what a writer happened to see or hear, often at a particular landing place, and the island was not surveyed continuously. A gap in surviving accounts can mark dwindling numbers, reduced encounters or simply missing records. Consequently, the usual late-seventeenth-century date expresses the last known evidence, not a witnessed extinction event. This distinction also prevents a single uncertain report from carrying more weight than the bones and the better-documented earlier observations.

The subfossils offer a separate kind of record. They establish that large parrots lived on Mauritius and help identify their anatomy, but they are not automatically contemporary with the European accounts. Deposits may accumulate over long periods, and individual bones can be transported before burial. Connecting one bone assemblage to a particular historical bird therefore depends on anatomical agreement and locality context, rather than proximity alone.