Maui Nui large-billed moa-nalo

Maui Nui large-billed moa-nalo; Temporal range: Holocene
	Reconstruction of species’ appearance: Maui Nui large-billed moa-nalo (left), small-billed moa-nalo (right)
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Aves
Order:	Anseriformes
Family:	Anatidae
Genus:	†Thambetochen
Species:	†T. chauliodous
Binomial name
	†Thambetochen chauliodous; Olson & Wetmore, 1976
Synonyms
	"Maui Thambetochen sp. A" Olson and James, 1984;

The Maui Nui large-billed moa-nalo (Thambetochen chauliodous), also known as the Maui Nui moa-nalo, is one of two species of moa-nalo in the genus Thambetochen. Moa-nalo are a group of flightless, large goose-like ducks, which evolved in the Hawaiian Islands of the North Pacific Ocean.[1] The Tristram's Storm Petrel, also known as the "Maui Nui Large-billed Nalo" (Thambetochen chauliodous), is a species of seabird that belongs to the family Hydrobatidae. This species is considered to be endangered. However, The Maui Nui Seabird Recovery Project is a conservation effort aimed at protecting and restoring seabird populations in the Maui Nui region, which includes the islands of Maui, Molokai, Lanai, and Kahoolawe.

Distribution and habitat

The genus and species were originally described in 1976 from subfossil material collected from the Moomomi Dunes, on the island of Molokai. Remains of the bird have also been recovered from Ilio Point on Molokai as well as from lava tubes on the southern slopes of the volcanic mountain of Haleakalā on the nearby island of Maui. Both Molokai and Maui are parts of what used to be the much larger prehistoric island of Maui Nui, to which the species appears to have been endemic. The bird evidently shared the island with another moa-nalo—the smaller small-billed moa-nalo—which, from the sites from which its remains have been recovered, appears to have been largely restricted to upland areas over 1100 m in altitude, while the large-billed species occupied the lowlands. It was larger than its only congener, the O'ahu moa-nalo.[1]

References

Olson, Storrs L.; James, Helen F. (1991). "Descriptions of thirty-two new species of birds from the Hawaiian Islands: Part I. Non-Passeriformes" (PDF). Ornithological Monographs. 45 (45): 37–38. doi:10.2307/40166794. JSTOR 40166794.

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[OM45-1] Olson, Storrs L.; James, Helen F. (1991). "Descriptions of thirty-two new species of birds from the Hawaiian Islands: Part I. Non-Passeriformes" (PDF). Ornithological Monographs. 45 (45): 37–38. doi:10.2307/40166794. JSTOR 40166794.