EX
Rodrigues Parakeet Alexandrinus exsul



Taxonomy

Taxonomic note
Alexandrinus exsul (Handbook of the Birds of the World and BirdLife International 2020) was previously listed as Psittacula exsul (del Hoyo et al. 2014). Braun et al. (2019) report the situation where the parrot genera PsittinusTanygnathus and Mascarinus nest genetically within Psittacula, meaning that either Psittacula replaces these latter three genera or it breaks down into monophyletic genera of their own. The latter course is preferred, building on Braun et al. (2016), where several genera were established, including Alexandrinus for P. krameri, P. eques and P. exsul.

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.
Handbook of the Birds of the World and BirdLife International. 2020. Handbook of the Birds of the World and BirdLife International digital checklist of the birds of the world. Version 5. Available at: https://datazone.birdlife.org/userfiles/file/Species/Taxonomy/HBW-BirdLife_Checklist_v5_Dec20.zip.

IUCN Red List criteria met and history
Red List criteria met
Critically Endangered Endangered Vulnerable
D D D1

Red List history
Year Category Criteria
2024 Extinct
2016 Extinct
2012 Extinct
2008 Extinct
2004 Extinct
2000 Extinct
1994 Extinct
1988 Extinct
Species attributes

Migratory status not a migrant Forest dependency unknown
Land-mass type Average mass -
Range

Estimate Data quality
Severely fragmented? no -
Population
Estimate Data quality Derivation Year of estimate
Population size 0 mature individuals good estimated -
Population trend - - -
Generation length 7.78 years - - -

Population justification: None remain.

Trend justification: The species appeared to be abundant in 1691-93 (Leguat 1708), but by the time the first specimen was recieved in 1871 (Newton 1872), it was apparently scarce. Only one individual was seen in forests on the south-western side of Rodrigues (Slater 1879), and few were seen in 1875 (Caldwell 1875) when the last specimen was collected (Newton and Newton 1876). The remaining population was likely wiped out by a series of cyclones which struck the island in 1876 (Cheke 1987). The species was reportedly good to eat (Leguat 1708), so hunting also likely contributed to their decline.


Country/territory distribution
Country/Territory Presence Origin Resident Breeding visitor Non-breeding visitor Passage migrant
Mauritius extinct native yes

Important Bird and Biodiversity Areas (IBA)
Country/Territory IBA Name

Habitats & altitude
Habitat (level 1) Habitat (level 2) Importance Occurrence
Forest Subtropical/Tropical Moist Lowland major resident
Altitude   Occasional altitudinal limits  

Threats & impact
Threat (level 1) Threat (level 2) Impact and Stresses
Biological resource use Hunting & trapping terrestrial animals - Intentional use (species is the target) Timing Scope Severity Impact
Past, Unlikely to Return Unknown Unknown Past Impact
Stresses
Species mortality
Biological resource use Logging & wood harvesting - Unintentional effects: (subsistence/small scale) [harvest] Timing Scope Severity Impact
Past, Unlikely to Return Unknown Unknown Past Impact
Stresses
Ecosystem degradation, Ecosystem conversion

Recommended citation
BirdLife International (2024) Species factsheet: Rodrigues Parakeet Alexandrinus exsul. Downloaded from https://datazone.birdlife.org/species/factsheet/rodrigues-parakeet-alexandrinus-exsul on 23/12/2024.
Recommended citation for factsheets for more than one species: BirdLife International (2024) IUCN Red List for birds. Downloaded from https://datazone.birdlife.org/species/search on 23/12/2024.