Skip to Main Content
Declines in the breeding population of Vaux's Swifts in northeastern Oregon.Author(s): Evelyn L. Bull
Source: Western Birds. 34: 230-234
Publication Series: Scientific Journal (JRNL)
PDF: View PDF (377 KB)
DescriptionI investigated trends in the breeding population of Vaux's Swift (Chaetura vauxi) in northeastern Oregon by revisiting in 2003 39 stands of trees that contained swifts in 1991. In 2003 the number of swifts in these stands was significantly fewer, with only 46% of the stands still containing swifts. Only 29% of the 58 nest and roost trees the swifts were using from 1989 to 1997 were still suitable for nesting in 2003; the remainder had fallen oven broken of L or become riddled with cavities. Factors that may be affecting the population include tree mortality caused by insect outbreaks and disease, tree harvesting, wildfire, climatic shifts, and habitat changes in the winter range.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationBull, Evelyn L. 2003. Declines in the breeding population of Vaux''s Swifts in northeastern Oregon. Western Birds. 34: 230-234
- Treatment of old-growth stands and its effects on birds, ants, and large woody debris: a case study.
- Nest site selection in native and exotic trees by Black-chinned Hummingbirds
- Timing of hummingbird migration in southeastern Arizona: implications for conservation
XML: View XML