Mascarene swiftlet
{{short description|Species of bird}}
{{Speciesbox
| name = Mascarene swiftlet
| image = Mascarene Swiftlet.jpg
| status = NT
| status_system = IUCN3.1
| taxon = Aerodramus francicus
| authority = (Gmelin, JF, 1789)
| synonyms = Collocalia francica
}}
The Mascarene swiftlet or Mauritius swiftlet (Aerodramus francicus) is a species of swift in the family Apodidae.
It is found in Mauritius and Réunion, and the populations on the two islands have recently been confirmed to differ subspecifically. The nominate race francicus is found on Mauritius and the recently described race saffordi occurs on Réunion.{{cite journal | last1=Kirwan | first1 = Guy M.| last2 = Shirihai | first2 = Hadoram | last3 = Schweizer | first3 = Manuel | year = 2018 | title = A morphological revision of Mascarene Swiftlet Aerodramus francicus, with the description of a new subspecies from Reunion | journal = Bulletin of the British Ornithologists' Club | volume = 138 | issue = 2 | pages = 117–130 | doi = 10.25226/bboc.v138i2.2018.a6 | doi-access=free }}
Its natural habitats are subtropical or tropical moist lowland forest, subtropical or tropical high-altitude shrubland, subtropical or tropical high-altitude grassland, caves, arable land, and heavily degraded former forest.
It is threatened by habitat loss.
Taxonomy
The Mascarene swiftlet was formally described in 1789 by the German naturalist Johann Friedrich Gmelin in his revised and expanded edition of Carl Linnaeus's Systema Naturae. He placed it with the swifts and swallows in the genus Hirundo and coined the binomial name Hirundo francica.{{ cite book | last=Gmelin | first=Johann Friedrich | author-link=Johann Friedrich Gmelin| year=1789 | title=Systema naturae per regna tria naturae : secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis | edition=13th | volume=1, Part 2 | language=Latin | location=Lipsiae [Leipzig] | publisher=Georg. Emanuel. Beer | page=1017 | url=https://www.biodiversitylibrary.org/page/2656512 }} Gmelin based his description on "La petite hirondelle noire à croupion gris" that had been described in 1779 by the French polymath Georges-Louis Leclerc, Comte de Buffon from a specimen collected on the "Île de France" (Mauritius) in his Histoire Naturelle des Oiseaux.{{ cite book | last=Buffon | first=Georges-Louis Leclerc de | author-link=Georges-Louis Leclerc, Comte de Buffon | year=1779 | title=Histoire Naturelle des Oiseaux | volume=6 | location=Paris | publisher=De l'Imprimerie Royale | pages=696–697 | chapter=La petite hirondelle noire à croupion gris | language=French | chapter-url=https://gallica.bnf.fr/ark:/12148/bpt6k1069718q/f774.item }} A hand-coloured illustration was also published.{{ cite book | last1=Buffon | first1=Georges-Louis Leclerc de | author1-link=Georges-Louis Leclerc, Comte de Buffon | last2=Martinet | first2=François-Nicolas | author2-link=François-Nicolas Martinet | last3=Daubenton | first3=Edme-Louis | author3-link=Edme-Louis Daubenton | last4=Daubenton | first4=Louis-Jean-Marie | author4-link=Louis-Jean-Marie Daubenton | year=1765–1783 | chapter=Hirondelle de l'Isle de Bourbon | title=Planches Enluminées D'Histoire Naturelle | volume=6 | location=Paris | publisher=De L'Imprimerie Royale | at=Plate 544, fig 2 | chapter-url=https://www.biodiversitylibrary.org/page/35214293 }} The Mascarene swiftlet is now placed with 27 other swiftlets in the genus Aerodramus that was introduced in 1906 by the American ornithologist Harry C. Oberholser.{{ cite journal | last=Oberholser | first=Harry C. | author-link=Harry C. Oberholser | year=1906 | title=A monograph of the genus Collocalia | journal=Proceedings of the Academy of Natural Sciences of Philadelphia | volume=58 | pages=177–212 [179, 182] | url=https://www.biodiversitylibrary.org/page/24707030 }}{{cite web| editor1-last=Gill | editor1-first=Frank | editor1-link=Frank Gill (ornithologist) | editor2-last=Donsker | editor2-first=David | editor3-last=Rasmussen | editor3-first=Pamela | editor3-link=Pamela Rasmussen | date=January 2022 | title=Owlet-nightjars, treeswifts & swifts | work=IOC World Bird List Version 12.1 | url=http://www.worldbirdnames.org/bow/swifts/ | publisher=International Ornithologists' Union | access-date=10 July 2022 }} The genus name combines the Ancient Greek aēr meaning "air" with -dromos meaning
"-racer" (from trekhō "to run"). The specific epithet francicus signifies the "Île de France", the type locality.{{cite book | last=Jobling | first=James A. | year=2010| title=The Helm Dictionary of Scientific Bird Names | publisher=Christopher Helm | location=London | isbn=978-1-4081-2501-4 | pages=[https://archive.org/stream/Helm_Dictionary_of_Scientific_Bird_Names_by_James_A._Jobling#page/n34/mode/1up 34], [https://archive.org/stream/Helm_Dictionary_of_Scientific_Bird_Names_by_James_A._Jobling#page/n163/mode/1up 163]}}
Two subspecies are recognised:
- A. f. francicus (Gmelin, JF, 1789) – Mauritius
- A. f. saffordi Kirwan, Shirihai & Schweizer, 2018 – La Réunion