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Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Cladus: Sarcopterygii
Cladus: Rhipidistia
Cladus: Tetrapodomorpha
Cladus: Eotetrapodiformes
Cladus: Elpistostegalia
Superclassis: Tetrapoda
Cladus: Reptiliomorpha
Cladus: Amniota
Classis: Reptilia
Cladus: Eureptilia
Cladus: Romeriida
Subclassis: Diapsida
Cladus: Sauria
Infraclassis: Archosauromorpha
Cladus: Crurotarsi
Divisio: Archosauria
Cladus: Avemetatarsalia
Cladus: Ornithodira
Subtaxon: Dinosauromorpha
Cladus: Dinosauriformes
Cladus: Dracohors
Cladus: Dinosauria
Ordo: Saurischia
Cladus: Eusaurischia
Subordo: Theropoda
Cladus: Neotheropoda
Cladus: Averostra
Cladus: Tetanurae
Cladus: Avetheropoda
Cladus: Coelurosauria
Cladus: Tyrannoraptora
Cladus: Maniraptoromorpha
Cladus: Maniraptoriformes
Cladus: Maniraptora
Cladus: Pennaraptora
Cladus: Paraves
Cladus: Eumaniraptora
Cladus: Avialae
Infraclassis: Aves
Cladus: Euavialae
Cladus: Avebrevicauda
Cladus: Pygostylia
Cladus: Ornithothoraces
Cladus: Ornithuromorpha
Cladus: Carinatae
Parvclassis: Neornithes
Cohors: Neognathae
Cladus: Neoaves
Ordo: Gruiformes

Familia: Rallidae
Genus: Amaurornis
Species: Amaurornis magnirostris

Amaurornis magnirostris Lambert, 1998

Lambert, F.R. (1998). A new species of Amaurornis from the Talaud Islands, Indonesia, and a review of taxonomy of bush hens occurring from the Philippines to Australia. Bulletin of the British Ornithologists' Club 118: 67–82. BHL
IUCN: Amaurornis magnirostris (Vulnerable)

Vernacular names
català: Polla becgrossa
Deutsch: Karakelongkielralle
English: Talaud Bush-hen
español: Gallineta de las Talaud
français: Râle à gros bec
Bahasa Indonesia: Kareo talaud
Nederlands: Talaudwaterhoen
polski: Bagiewnik ciemnobrzuchy
svenska: talaudsumphöna

The Talaud bush-hen (Amaurornis magnirostris) is a vulnerable waterbird in the rail and crake family.

It is a recently described species from Karakelang Island in the Talaud Islands, Indonesia. It occurs in forest, scrub, and overgrown plantations.

Talaud bush-hen is a 30.5 cm long, large, very dark and robust bush-hen. Its large head and its upperparts are dark brown, and its underparts and flanks are very dark bluish grey. The large, thick bill is pale green, and the legs are yellow, becoming more olive at the rear.

The only confirmed call of this shy species is a series of loud, low-pitched croaking barks, but it is likely that it also makes the shrieks typical of bush-hens.

The population is estimated at 2,350-9,560 individuals on Karakelang. It may also occur on neighbouring islands, but there is little forest on those, less than 20 km2 compared to 350 km2 on Karakelang.

There are two protected areas totalling 21,800 hectares, but there has been no management and these areas are threatened by agricultural encroachment, illegal logging, and fire. Trapping for food and introduced rats may also pose a threat.

BirdLife International (2016). "Amaurornis magnirostris". IUCN Red List of Threatened Species. 2016: e.T22732147A95043197. doi:10.2305/IUCN.UK.2016-3.RLTS.T22732147A95043197.en. Retrieved 20 November 2021.

Birdlife International
Taylor and van Perlo, Rails SBN 90-74345-20-4

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