Hypotaenidia dieffenbachii 

Scope: Global
Language: English

Translate page into:

Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Aves Gruiformes Rallidae

Scientific Name: Hypotaenidia dieffenbachii (Gray, 1843)
Common Name(s):
English Dieffenbach's Rail
Gallirallus dieffenbachii (Gray, 1843)
Taxonomic Source(s): Brooks, T. 2000. Extinct species. In: BirdLife International (ed.), Threatened Birds of the World, pp. 701-708. Lynx Edicions and BirdLife International, Barcelona and Cambridge, U.K.
Taxonomic Notes: Hypotaenidia dieffenbachii (del Hoyo and Collar 2014) was previously placed in the genus Gallirallus.

Assessment Information [top]

Red List Category & Criteria: Extinct ver 3.1
Year Published: 2016
Date Assessed: 2016-10-01
Assessor(s): BirdLife International
Reviewer(s): Butchart, S. & Symes, A.
Facilitator/Compiler(s): Brooks, T., Khwaja, N., Mahood, S., Martin, R
This species was found on the Chatham Islands, New Zealand, but was driven to extinction by the depredations of introduced species. The type material was collected in 1840, and it was Extinct by 1872.
Previously published Red List assessments:

Geographic Range [top]

Range Description:Hypotaenidia dieffenbachii was endemic to Chatham, Mangere and Pitt Islands, New Zealand (Marchant and Higgins 1993). It is known from the type, in Tring (Knox and Walters 1994), with one other specimen reported to be in Bremen (Greenway 1967), and from abundant subfossil material (Tennyson and Millener 1994). The species was already scarce when the type was collected in 1840, and was extinct by 1872 (Marchant and Higgins 1993).

Countries occurrence:
Regionally extinct:
New Zealand
Additional data:
Continuing decline in area of occupancy (AOO):Unknown
Extreme fluctuations in area of occupancy (AOO):NoEstimated extent of occurrence (EOO) - km2:
Continuing decline in extent of occurrence (EOO):UnknownExtreme fluctuations in extent of occurrence (EOO):No
Continuing decline in number of locations:Unknown
Extreme fluctuations in the number of locations:No
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:None remain.
Additional data:
Continuing decline of mature individuals:Unknown
Extreme fluctuations:NoPopulation severely fragmented:No
Continuing decline in subpopulations:Unknown
Extreme fluctuations in subpopulations:NoAll individuals in one subpopulation:No

Habitat and Ecology [top]

Habitat and Ecology:Nothing is known, though it may have inhabited scrub or forest.

Continuing decline in area, extent and/or quality of habitat:Unknown
Generation Length (years):3.4
Movement patterns:Not a Migrant

Threats [top]

Major Threat(s): Its extinction was presumably due to predation by introduced rats, cats and dogs, and habitat loss from fire (Marchant and Higgins 1993).

Citation: BirdLife International. 2016. Hypotaenidia dieffenbachii. The IUCN Red List of Threatened Species 2016: e.T22692455A93354540. . Downloaded on 19 July 2018.
Disclaimer: To make use of this information, please check the <Terms of Use>.
Feedback: If you see any errors or have any questions or suggestions on what is shown on this page, please provide us with feedback so that we can correct or extend the information provided