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Keyword: Mexican Spotted Owls

Dispersal movements and survival rates of juvenile Mexican Spotted Owls in northern Arizona

Publications Posted on: August 01, 2018
We monitored dispersal movements of 19 radiotagged juvenile Mexican Spotted Owls (Strix occidentalis Zucida) in northern Arizona during 1994 and 1995. All juveniles initiated dispersal movements in September or October during both years, with most dispersing during September. Initial dispersal movements were rapid and abrupt, but lacked a significant directional pattern.

Ecology of Mexican spotted owls

Media Gallery Posted on: October 05, 2015
RMRS scientists have been involved in Mexican Spotted Owl recovery efforts since before the species was listed as Threatened in 1993. Today, our scientists are developing new knowledge of this owl, synthesizing existing information, and working with land managers to integrate habitat requirements for the owl and its important prey species into management plans.

Ecology of the Mexican Spotted Owl

Projects Posted on: August 14, 2015
Rocky Mountain Research Station (RMRS) scientists have been at the forefront of efforts to understand the ecology of the threatened Mexican spotted owls (Strix occidentalis lucida) for more than 25 years. These scientists and their cooperators have produced most of the existing scientific information on this species. Today, RMRS scientists continue to be actively involved in developing new knowledge on this owl, synthesizing existing information, and working with managers to integrate habitat requirements for the owl and its important prey species into land management plans.

Rocky Mountain Research Station Part 2 [U.S. Forest Service scientists continue work with the Lincoln National Forest]

Publications Posted on: December 06, 2010
The Rocky Mountain Research Station (RMRS) is studying the effects of fuels reduction treatments on Mexican Spotted Owls and their prey in the Sacramento Mountains of New Mexico. One challenge facing Forest Service managers is that much of the landscape is dominated by overstocked stands resulting from years of fire suppression.

Evaluating methods for monitoring populations of Mexican spotted owls: A case study

Publications Posted on: July 18, 2006
Monitoring population status of rare or elusive species presents special challenges. Understanding population trends requires separating signal (true and important changes in abundance) from noise (normal temporal and sampling variation; e.g., Block et al. 2001). This is particularly difficult when small numbers or elusive habits make it difficult to obtain precise estimates of population parameters (Thompson et al. 1998:68).