NATURAL HISTORY · CATALOGUE RECORD
Nkulengu Rail
Himantornis haematopus Hartlaub, 1855
Source-backed taxonomic record
Accepted species in Catalogue of Life’s 11 September 2026 base release. This preserves the source classification and available supporting data; it is not a completed species monograph.
Open encyclopedia reference
The Nkulengu rail (Himantornis haematopus) is a species of bird in the family Rallidae. It belongs to the monotypic genus Himantornis. For long, this singular rail was considered a member of a distinct subfamily Himantornithinae. This was based on the assumption that it was a sort of "living fossil", as it resembles other Gruiformes rather than other rails in many traits. But as it seems, the supposed plesiomorphies are actually atavistic or otherwise re-evolved traits in reaction to its African rainforest habitat. Its closest living relatives seem to be the Asian genera Amaurornis, Gallicrex, Megacrex, and the widespread African Aenigmatolimnas, with Megacrex and Himantornis representing ancient and ecologically quite similar lineages at the extreme ends of the group's distribution. However a later genetic study found that it was basal to the radiation containing Porzana, Tribonyx, Gallinula and Fulica. It is found in Angola, Cameroon, Central African Republic, Republic of the Congo, Democratic Republic of the Congo, Ivory Coast, Equatorial Guinea, Gabon, Ghana, Guinea, Liberia, Nigeria, Sierra Leone, Togo, and Uganda.
Wikipedia contributors, Nkulengu rail; see linked history · CC BY-SA 4.0 . Plain-text lead excerpt, at most 180 words; no infobox or later sections Retrieved 2026-10-05T03:29:51.925130+00:00. This reference remains separate from the taxonomic record.
Identity & source status
- Scientific name
- Himantornis haematopus Hartlaub, 1855
- Name authority
- Hartlaub, 1855
- Common name
- Nkulengu Rail
- Rank
- species
- Accepted status
- accepted
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Aves
- Order
- Gruiformes
- Family
- Rallidae
- Genus
- Himantornis
- Extinction status
- Recorded extant
Classification family tree
Nested taxonomic groups from the source. This is not a direct-ancestor chain, a dated evolutionary tree or a phylogenetic reconstruction.
- domainEukaryota (Chatton, 1925) Whittaker & Margulis, 1978
- kingdomAnimalia
- phylumChordata
- subphylumVertebrata
- infraphylumGnathostomata
- parvphylumOsteichthyes
- megaclassTetrapoda
- classAves
- orderGruiformes
- familyRallidae
- genusHimantornis Hartlaub, 1855
- speciesHimantornis haematopus Hartlaub, 1855
Close classified relatives
No other member of this genus is present in the selected snapshot.
Documented distribution
Source distribution statements, not a complete range map. A listed locality is not necessarily a place of origin.
Source literature & publication evidence
References attached to this source record, including nomenclatural citations where supplied. This is a selected bibliography; abbreviated citations remain in the source’s form.
- https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=176349 Source fields: Taxon.tsv dwc:namePublishedIn, Taxon.tsv dcterms:references
Origins, evidence & remaining research
Name authority and publication references document nomenclature where the source supplies it. They do not establish evolutionary origins or the earliest fossil occurrence.
Specimen-level evidence, morphology, ecological research, phylogenetic studies, a comprehensive bibliography and a located literary passage have not yet been compiled for this record. A suitable sourced image remains to be added.
Dataset citation & attribution
This exact taxon in ChecklistBank · Catalogue of Life 2026-09-11
Catalogue of Life 2026-09-11; dataset 316321; doi:10.48580/dgz5n. https://creativecommons.org/licenses/by/4.0/ . Retrieved 5 October 2026.
Stable key: col:3LXZH. Classification follows source parent identifiers. English common names may vary by region.