Biology:Chaetura

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Chaetura is a genus of needletail swifts found in the Americas. Although they resemble swallows, the two are not at all closely related; this is instead a result of convergent evolution. Some members of Chaetura are long-distance migrants, while others are year-round residents.

Taxonomy

The genus Chaetura was introduced in 1826 by the English naturalist James Francis Stephens who listed several species in the genus but did not specify a type.[1] In 1829 the English zoologist William Swainson selected the type as Chaetura pelasgia Stevens (sic). This is a junior synonym of Hirundo pelagica Linnaeus the chimney swift.[2][3] The genus name combines the Ancient Greek χαιτη/khaitē meaning "long flowing hair" with ουρα/oura meaning "tail".[4]

Species

The genus contains 11 species:[5]

  • Grey-rumped swift, Chaetura cinereiventris – widespread in South America
  • Band-rumped swift, Chaetura spinicaudus – Panama to central Brazil
  • Lesser Antillean swift, Chaetura martinica – Lesser Antilles
  • Costa Rican swift, Chaetura fumosa – Costa Rica, Panama and north Colombia
  • Pale-rumped swift, Chaetura egregia – west Amazonia
  • Chimney swift, Chaetura pelagica – breeds in central south, southeast Canada and central, east USA; winters west South America
  • Vaux's swift, Chaetura vauxi – west Canada to north South America
  • Chapman's swift, Chaetura chapmani – Panama to northeast Brazil and west Amazonia
  • Ashy-tailed swift, Chaetura andrei – east Venezuela
  • Sick's swift, Chaetura meridionalis – breeds south Brazil to east Bolivia, Paraguay and north Argentina; winters north South America and Panama
  • Short-tailed swift, Chaetura brachyura – Panama through Amazonia

A fossil species, Chaetura baconica, was described from Late Miocene deposits of Hungary.[6]

References

  1. Stephens, James Francis (1826). Shaw, George. ed. General Zoology, or Systematic Natural History. 13, Part 2. London: Kearsley et al.. p. 76. https://www.biodiversitylibrary.org/page/36850411. 
  2. Swainson, William (1831). Zoological illustrations, or, Original figures and descriptions of new, rare, or interesting animals. Series 2. 1. London: Baldwin, Cradock. Plate 42 text. https://www.biodiversitylibrary.org/page/29155318. 
  3. Peters, James Lee, ed (1940). Check-list of Birds of the World. 4. Cambridge, Massachusetts: Harvard University Press. p. 235. https://www.biodiversitylibrary.org/page/14476706. 
  4. Jobling, James A.. "Chaetura". The Key to Scientific Names. Cornell Lab of Ornithology. https://birdsoftheworld.org/bow/key-to-scientific-names/search?q=Chaetura. 
  5. Gill, Frank; Donsker, David; Rasmussen, Pamela, eds (February 2025). "Owlet-nightjars, treeswifts & swifts". IOC World Bird List Version 15.1. International Ornithologists' Union. http://www.worldbirdnames.org/bow/swifts/. 
  6. Boev, Zlatozar (2000). "The Presence of Apus baranensis Janossy, 1977, (Aves: Apodidae) in the Late Pliocene of Bulgaria". Acta Zoologica Bulgarica 52 (2): 43–52. 

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