Swifts (Apodidae)

Vaux's Swift (Chaetura vauxi) - HBW 5, p. 444

French: Martinet de Vaux German: Graubauchsegler Spanish: Vencejo de Vaux
Other common names: Dusky-backed Swift; Richmond’s Swift (richmondi); Yucatán Swift (gaumeri)

Taxonomy: Cypcelus [sic] Vauxi J. K. Townsend, 1839, Fort Vancouver, Washington.
Previously considered conspecific with C. pelagica and C. chapmani. Races richmondi (including ochropygia) and gaumeri previously considered distinct species. A recent study considers that race aphanes is synonymous with C. andrei andrei, latter taking priority, i.e. as C. vauxi andrei, or that there may be two races of C. vauxi in N Venezuela, aphanes in W coastal range and andrei in E coastal range and S & E lowlands; same study also suggests that aphanes is identical to richmondi; however, these .. View all taxonomy...

Taxonomy: Cypcelus [sic] Vauxi J. K. Townsend, 1839, Fort Vancouver, Washington.
Previously considered conspecific with C. pelagica and C. chapmani. Races richmondi (including ochropygia) and gaumeri previously considered distinct species. A recent study considers that race aphanes is synonymous with C. andrei andrei, latter taking priority, i.e. as C. vauxi andrei, or that there may be two races of C. vauxi in N Venezuela, aphanes in W coastal range and andrei in E coastal range and S & E lowlands; same study also suggests that aphanes is identical to richmondi; however, these views not universally accepted. Six subspecies recognized.

Subspecies and Distribution:

  • vauxi (J. K. Townsend, 1839) - W North America from British Columbia to S California; winters in Mexico and Guatemala.
  • tamaulipensis Sutton, 1941 - E Mexico.
  • gaumeri Lawrence, 1882 - Yucatán Peninsula and Cozumel I.

     See all 6 subspecies
  • vauxi (J. K. Townsend, 1839) - W North America from British Columbia to S California; winters in Mexico and Guatemala.
  • tamaulipensis Sutton, 1941 - E Mexico.
  • gaumeri Lawrence, 1882 - Yucatán Peninsula and Cozumel I.
  • richmondi Ridgway, 1910 - S Mexico to Costa Rica and W Panama (Chiriquí).
  • ochropygia Aldrich, 1937 - E Panama.
  • aphanes Wetmore & Phelps, Jr., 1956 - N Venezuela.