''Amaurornis'' is a

genus Genus (; : genera ) is a taxonomic rank above species and below family (taxonomy), family as used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In bino ...

of birds in the rail family

Rallidae Rails (avian family Rallidae) are a large, Cosmopolitan distribution, cosmopolitan family (biology), family of small- to medium-sized terrestrial and/or semi-amphibious birds. The family exhibits considerable diversity in its forms, and includes ...

. The species in this genus are typically called bush-hens. A

monotypic In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unisp ...

subtribe Subtribe is a taxonomic category ranking which is below the rank of tribe and above genus. The standard suffix for a subtribe is -ina (in animals) or -inae (in plants). The first use of this word dates back to the late 19th century. An example of ...

, Amaurornithina, was proposed for this genus.

Taxonomy

The genus ''Amaurornis'' was erected by the German naturalist

Ludwig Reichenbach Heinrich Gottlieb Ludwig Reichenbach (8 January 1793 – 17 March 1879) was a German botanist, ornithologist and illustrator. It was he who first requested Leopold and Rudolf Blaschka, Leopold Blaschka to make a set of glass marine invertebrate m ...

in 1853 with the

plain bush-hen The plain bush-hen (''Amaurornis olivacea''), also named Philippine bush-hen or simply bush-hen , is a species of bird in the family Rallidae. It is endemic to the Philippines. Description and taxonomy EBird describes the bird as "A large ...

(''Amaurornis olivacea'') as the

type species In International_Code_of_Zoological_Nomenclature, zoological nomenclature, a type species (''species typica'') is the species name with which the name of a genus or subgenus is considered to be permanently taxonomically associated, i.e., the spe ...

. The name comes from the Greek ''amauros'', meaning "dusky" or "brown" and ''ornis'', meaning "bird". The

New Guinea flightless rail The New Guinea flightless rail (''Megacrex inepta''), also known as the Papuan flightless rail, is a species of bird in the family Rallidae, in the monotypic genus ''Megacrex''. Sometimes however, it was included in ''Amaurornis'' or ''Habroptila ...

was sometimes included in this genus, but more often held to constitute a distinct

genus ''Megacrex''. The first

cladistic Cladistics ( ; from Ancient Greek 'branch') is an approach to biological classification in which organisms are categorized in groups ("clades") based on hypotheses of most recent common ancestry. The evidence for hypothesized relationships is ...

studies of rails, based on

morphology Morphology, from the Greek and meaning "study of shape", may refer to: Disciplines *Morphology (archaeology), study of the shapes or forms of artifacts *Morphology (astronomy), study of the shape of astronomical objects such as nebulae, galaxies, ...

, strongly suggested that ''Amaurornis'' as traditionally defined is not

monophyletic In biological cladistics for the classification of organisms, monophyly is the condition of a taxonomic grouping being a clade – that is, a grouping of organisms which meets these criteria: # the grouping contains its own most recent co ...

, and that several species placed here are in fact closer to the small crakes traditionally placed in ''

Porzana ''Porzana'' is a genus of birds in the crake and rail family, Rallidae. Its scientific name is derived from Venetian terms for small rails. The spotted crake (''P. porzana'') is the type species. Taxonomy The genus ''Porzana'' was erected by t ...

''. This was subsequently confirmed by molecular data. However, these smallish species are probably not close to the large members of ''Porzana'' either, and would warrant re-establishment of the old genus ''Zapornia''.

Species

The genus contains five species:

References

Bird genera Rallidae Taxonomy articles created by Polbot Taxa named by Ludwig Reichenbach {{Gruiformes-stub