Skip to Main Content
Dispersal movements of juvenile Mexican Spotted Owls (Strix occidentalis lucida) in New MexicoAuthor(s): David P. Arsenault; Angela Hodgson; Peter B. Stacey
Source: In: Duncan, James R.; Johnson, David H.; Nicholls, Thomas H., eds. Biology and conservation of owls of the Northern Hemisphere: 2nd International symposium. Gen. Tech. Rep. NC-190. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station. 47-57.
Publication Series: General Technical Report (GTR)
Station: North Central Research Station
PDF: View PDF (1.22 MB)
DescriptionTail-mounted radio transmitters were attached to 12 juvenile and 3 sub-adult (yearling) Mexican Spotted Owls (Strix occidentalis lucida) in southwestern New Mexico from 1993 to 1996. Most juveniles dispersed from their natal territories during September. Intervals between dispersal of siblings ranged from 3 to more than 15 days. Juveniles exhibited two types of dispersing behavior; moving rapidly across the landscape (up to 11.3 km/night) and extensive local exploration. Two juveniles moved between separate mountain ranges and crossed at least 25 km of grassland and pinon/ juniper (Pinus/Juniperus spp.) savanna habitat, suggesting that isolated populations in the southwest U.S. could function as a metapopulation. During dispersal juveniles were found to roost in habitat unlike that normally used by adults, including open ponderosa pine (Pinus ponderosa) and pinon/juniper habitat. The three sub-adult females paired temporarily with adult males in their first summer, but then left in the fall, suggesting that dispersal can continue through an owl's second year.
- Check the Northern Research Station web site to request a printed copy of this publication.
- Our on-line publications are scanned and captured using Adobe Acrobat.
- During the capture process some typographical errors may occur.
- Please contact Sharon Hobrla, email@example.com if you notice any errors which make this publication unusable.
- 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.
CitationArsenault, David P.; Hodgson, Angela; Stacey, Peter B. 1997. Dispersal movements of juvenile Mexican Spotted Owls (Strix occidentalis lucida) in New Mexico. In: Duncan, James R.; Johnson, David H.; Nicholls, Thomas H., eds. Biology and conservation of owls of the Northern Hemisphere: 2nd International symposium. Gen. Tech. Rep. NC-190. St. Paul, MN: U.S. Dept. of Agriculture, Forest Service, North Central Forest Experiment Station. 47-57.
- Stand level impacts of Ips and Dendroctonus bark beetles in pine forest types of northern Arizona
- Ecology, management, and restoration of pinon-juniper and ponderosa pine ecosystems: combined proceedings of the 2005 St. George, Utah and 2006 Albuquerque, New Mexico workshops
- Ecological effects of large fires on US landscapes: benefit or catastrophe?
XML: View XML