Species fact sheet by Global Register of Migratory Species - www.groms.de

Chaetura vauxi (JK Townsend, 1839) Family: Apodidae Order: Apodiformes Back
Vaux's swift Graubauchsegler Martinet de Vaux Vencejo de Vaux
CMS NL Redlist 2000 (Criteria) NL CITES NL (Europe: SPEC threat status )
Migration: intercontinental

Chaetura vauxi

Nominate race a migrant, present in far N of range May to mid-Sept, exceptionally late Mar on coast. Migrates through S California mid-Apr to early May, with weaker autumn passage peaking early Sept, though continuing to early Oct, migrants leaving the state by mid-Oct. Recorded SE Farallon Is, 42 km W of San Francisco, in similar numbers over 22 years, in spring 813 in early-late May, and in autumn 803 early Sept to late Oct. Recorded E to Louisiana and Florida Passage through NW Mexico Apr-May and mid-Sept to Oct; nominate race present C Mexico to W Honduras, mid-Sept to May. Incidence of wintering in California increasing, small flocks occurring mainly in S, though wintering as far as NW California not unknown.
(del Hoyo J A Elliott; J Sargatal (eds) (1999) - www.hbw.com )

Regions:
Recommended link: http://animaldiversity.ummz.umich.edu/accounts/chaetura/c._vauxi$narrative.html
Feedback: mail to Klaus Riede
Explanatory notes
(Last update: 05.08.02 by E.Heuel)

Populations