Zapornia monasa 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Aves Gruiformes Rallidae

Scientific Name: Zapornia monasa (Kittlitz, 1858)
Common Name(s):
English Kosrae Crake
Porzana monasa (Kittlitz, 1858)
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: Zapornia monasa (del Hoyo and Collar 2014) was previously placed in the genus Porzana.

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 known from the island of Kosrae in Micronesia. The only records come from 1827-1828 and it is thought to have been driven Extinct by introduced predators in the subsequent 50 years.
Previously published Red List assessments:

Geographic Range [top]

Range Description:Zapornia monasa was endemic to Kosrae, Caroline Islands, Federated States of Micronesia. Kittlitz collected the only two known specimens (now in St Petersburg) in 1827-1828, and regarded the species as uncommon even then (Taylor 1998). It declined to extinction over the next half-century.

Countries occurrence:
Regionally extinct:
Micronesia, Federated States of
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:It inhabited coastal swamps and marshes, taro patches and "continually wet, shadowy places in the forest" (Taylor 1998). Measurements of the carpometacarpii from x-rays of the two specimens suggest that the species was flightless (Steadman 1986).

Systems:Terrestrial; Freshwater; Marine
Continuing decline in area, extent and/or quality of habitat:Unknown
Generation Length (years):2.7
Movement patterns:Not a Migrant

Threats [top]

Major Threat(s): Its extinction quickly followed the arrival of rats from missionary and whaling ships in the 1830s and 1840s (Taylor 1998).

Citation: BirdLife International. 2016. Zapornia monasa. The IUCN Red List of Threatened Species 2016: e.T22692708A93366211. . Downloaded on 25 June 2018.
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