The pile-builder megapode (''Megapodius molistructor'') is an extinct species of

megapode The megapodes, also known as incubator birds or mound-builders, are stocky, medium-large, chicken-like birds with small heads and large feet in the family Megapodiidae. Their name literally means "large foot" and is a reference to the heavy leg ...

. The

subfossil A fossil (from Classical Latin , ) is any preserved remains, impression, or trace of any once-living thing from a past geological age. Examples include bones, shells, exoskeletons, stone imprints of animals or microbes, objects preserved ...

remains were found by

Jean-Christophe Balouet Jean-Christophe Balouet (12 November 1956 − 31 March 2021) was a French palaeontologist. He has collaborated extensively with Storrs Olson of the Smithsonian Institution on palaeornithological research on the extinct birds of New Caledonia i ...

and

Storrs L. Olson Storrs Lovejoy Olson (April 3, 1944 – January 20, 2021) was an American biologist and ornithologist who spent his career at the Smithsonian Institution, retiring in 2008. One of the world's foremost avian paleontologists, he was best known ...

in the

Pindai Caves The Pindai Caves of New Caledonia are an archaeological and palaeontological site important for the study of prehistoric human settlement as well as of the Holocene fauna of the island. The Pindai area has been occupied by humans for varying per ...

of New Caledonia. Its remains have also been found on

Tonga Tonga (, ; ), officially the Kingdom of Tonga ( to, Puleʻanga Fakatuʻi ʻo Tonga), is a Polynesian country and archipelago. The country has 171 islands – of which 45 are inhabited. Its total surface area is about , scattered over in ...

Description

With a weight of 3.5 kg, ''M. molistructor'' was heavier than all existing ''Megapodius'' species. On Tonga, it was the largest ground-dwelling bird species. The fossil material consists of a left tarsometatarsus, a complete left scapula, a half right scapula, a proximal-end left ulna, a fragment of the right femur, several ungual phalanges, an anterior-end right scapula, a proximal-end right ulna, a distal left ulna, a distal-end left ulna proximal, and a half right femur.

Extinction

When the early settlers of the

Lapita The Lapita culture is the name given to a Neolithic Austronesian peoples, Austronesian people and their material culture, who settled Island Melanesia via a seaborne migration at around 1600 to 500 BCE. They are believed to have originated from ...

culture arrived in Tonga around 1500 BC, they found only marine species such as sea turtles and giant forms of terrestrial birds such as megapodes, doves, and rails. The hunting of these bird species for food led to their rapid extinction. In New Caledonia, the giant megapode might have survived into historic times.

William Anderson William Anderson may refer to: Arts and entertainment * William Anderson (artist) (1757–1837), painter of marine and historical paintings * William Anderson (theatre) (1868–1940), Australian stage entrepreneur * William Anderson (1911–1986) ...

, a naturalist and surgeon's mate aboard during James Cook's second South Sea voyage, described a bird from New Caledonia with bare legs, which he named ''Tetrao australis''. Considering that all ''

Tetrao ''Tetrao'' is a genus of birds in the grouse subfamily known as capercaillies. They are some of the largest living grouse. Taxonomy The genus ''Tetrao'' was introduced in 1758 by the Swedish naturalist Carl Linnaeus in the tenth edition of ...

'' species have feathered legs, Anderson's bird might well have been a megapode.Balouet, J.-C. & Alibert, E. (1990):''Extinct Species of the World'', Barrons, New York, London, Toronto, Sydney.

References

External links

Steadman, David William: The biogeography and extinction of megapodes in Oceania
(PDF, fulltext)
Association Endemia - Megapodius molistructor
{{Taxonbar, from=Q310224 pile-builder megapode Extinct birds of New Caledonia

† A dagger, obelisk, or obelus is a typographical mark that usually indicates a footnote if an asterisk has already been used. The symbol is also used to indicate death (of people) or extinction (of species). It is one of the modern descendan ...

Late Quaternary prehistoric birds Holocene extinctions pile-builder megapoded Taxa named by Jean-Christophe Balouet