Hypotaenidia dieffenbachii


Taxonomy [top]

Kingdom Phylum Class Order Family

Scientific Name: Hypotaenidia dieffenbachii
Species Authority: (Gray, 1843)
Common Name(s):
English Dieffenbach's Rail
Gallirallus dieffenbachii (Gray, 1843)
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: 2012
Date Assessed: 2012-05-01
Assessor(s): BirdLife International
Reviewer(s): Symes, A. & Butchart, S.
Facilitator/Compiler(s): Brooks, T., Khwaja, N. & Mahood, S.
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.

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).

Regionally extinct:
New Zealand
Range Map: Click here to open the map viewer and explore range.

Habitat and Ecology [top]

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

Systems: Terrestrial

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 2012. Hypotaenidia dieffenbachii. The IUCN Red List of Threatened Species. Version 2015.2. <>. Downloaded on 03 September 2015.
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