Skip to Main Content
Habitat associations of sympatric red-tailed hawks and northern goshawks on the Kaibab PlateauAuthor(s): Frank A. La Sorte; R. William Mannan; Richard T. Reynolds; Teryl G. Grubb
Source: Journal of Wildlife Management. 68(2): 307-317.
Publication Series: Scientific Journal (JRNL)
Station: Rocky Mountain Research Station
PDF: View PDF (212.56 KB)
DescriptionWe investigated habitat association of sympatric red-tailed hawks (Buteo jamaicensis) and northern goshawks (Accipiter gentilis) at 2 spatial scales centered on nest sites: (1) fine-scale patterns of forest structure and topography within 16-m radius circles (0.08 ha), and (2) midscale patterns of forested and nonforested areas, forest fragmentation, and topography within 2,085-m-radius circles (1,367 ha). Nonforested areas were defined as any area lacking >20% canopy closure within a 30 × 30-m cell. At both scales, red-tailed hawk associations were more variable and goshawk associations less variable. At the fine scale, goshawks were consistently associated with open understories, tall trees, and gentle slopes (x = 9.6°, SD = 6.9) while red-tailed hawks were associated, on average, with steep, north-facing slopes (x = 17.4°, SD = 8.1) and dense understories. At the midscale, goshawks were consistently associated with patches of continuous forest and level terrain within 645 m of nest sites. Red-tailed hawks were associated with nonforested areas located within 105–645 m of nest sites and steep slopes within 105 m of nest sites. Forest fragmentation was greater around red-tailed hawk nest sites, and forested regions were more aggregated around goshawk nest sites when compared with the other species. These patterns indicate that on the Kaibab Plateau, red-tailed hawks will gain habitat at the midscale and goshawks will lose habitat at both scales if forests are fragmented and mature forest structure is lost.
- You may send email to email@example.com 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.
CitationLa Sorte, Frank A.; Mannan, R. William; Reynolds, Richard T.; Grubb, Teryl G. 2004. Habitat associations of sympatric red-tailed hawks and northern goshawks on the Kaibab Plateau. Journal of Wildlife Management. 68(2): 307-317.
KeywordsAccipiter gentilis, Arizona, Buteo jamaicensis, forest fragmentation, GIS, habitat association, Landsat, landscape pattern, northern goshawk, patch analysis, red-tailed hawk, remote sensing
- Red-tailed hawk dietary overlap with northern goshawks on the Kaibab Plateau, AZ
- Distribution, density, and productivity of accipiter hawks breeding in Oregon
- Wintering Golden Eagles on the coastal plain of South Carolina
XML: View XML