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[HBW - BirdLife (v3)] |
21/05/2024 12:57:17 AM |
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| Species Details [Taxonomy: HBW - BirdLife (v3)] |
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| VU |
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Inaccessible Finch* |
Id (Atlas): |
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Nesospiza acunhae |
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Description (10)
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Inaccessible Finch
© flickr.com
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Other Names (World)
Inaccessible Finch, Nightingale Finch, Inaccessible Bunting, Lowland Finch (acunhae), Upland Finch (fraseri), Dunn's Finch (dunnei), Tristan Bunting, Tristan Finch, Inaccessible Island Finch
Family
Thraupidae (Tanagers)
Size
16 cm
First Described (Guide)
Cabanis, 1873
Habitat
Fern-bush and wet heath for highland forms and tussock-grassland on coastal slopes for the lowland form.
St Helena.
Population
Estimated population is 23400 (2013) and stable.
Status VU
Accidental introduction of mammalian predators and New Zealand flax degrading habitat are the main threats. Estimated population is 30,000 (2010) and stable.
For more information see BirdLife International Species Factsheet.
Subspecies
Nesospiza acunhae (Sibley and Monroe 1990, 1993) has been split into Inaccessible Finch (Nesospiza acunhae) (Inaccessible Island) and Nightingale Finch (Nesospiza questi) (Nightingale Island), while subspecies dunnei of Wilkins's Finch (Nesospiza wilkinsi) (Inaccessible Island) has been transferred to Inaccessible Finch (Nesospiza acunhae) following Ryan (2008) who provides compelling phylogenetic evidence for this arrangement and points out the morphological and vocal differences supporting the treatment of paraphyletic forms questi and wilkinsi as species.
Some consider subspecies questi to be a full species Nightingale Finch (Nesospiza questi).
The following 4 subspecies are recognised:
- acunhae Cabanis, 1873 - Inaccessible Island in the Tristan da Cunha Group.
- questi P.R. Lowe, 1923 - Nightingale Island (south Atlantic Ocean). Considered by some authors to be a distinct species, Nightingale Finch (Nesospiza questi).
- dunnei Hagen, 1952 - Coast and eastern interior of Inaccessible I. Considered by some authors to be a subspecies of Wilkins's Finch (Nesospiza wilkinsi).
- fraseri Ryan, PG, 2008 - Interior Inaccessible I.
References
See References.
Files:
BirdLife International
For more information about the Inaccessible Finch see...  BirdLife International Species Factsheet.
Articles about the Inaccessible Finch
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