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Keyword: Mexican Spotted Owl

Upcoming: Through the smoke: Spotted owls, wildfire, and forest restoration

Events Posted on: October 06, 2020
In this webinar, RMRS research ecologist Sam Cushman, wildlife biologist Joe Ganey, and research ecologist Gavin Jones will discuss their latest research on spotted owls and wildfire.

Modeling the impacts of habitat loss under climate change on the Mexican spotted owl

Science Spotlights Posted on: September 11, 2020
Habitat loss and fragmentation are the most pressing threats to biodiversity, but understanding the potential for future habitat loss under climate change and its impacts across broad landscapes is difficult. Habitat selection models and area burned models that account for complex climate-fire relationships can help predict the impacts on species like the Mexican spotted owl.

Calling behavior of spotted owls in Northern Arizona

Publications Posted on: June 22, 2020
I studied the calling behavior of radio-tagged Mexican Spotted Owls (Strix occidentalis lucida) in northern Arizona. Owls used a variety of calls, with three call types (Four-note Location Call, Contact Call, and Bark Series) accounting for 86% of calling bouts heard. These calls were used by both sexes, but in significantly different proportions.

Comparative habitat use of sympatric Mexican spotted and great horned owls

Publications Posted on: June 22, 2020
To provide information on comparative habitat use, we studied radiotagged Mexican spotted owls (Strix occidentalis lucida: n = 13) and great horned owls (Bubo virginianus: n = 4) in northern Arizona. Home-range size (95% adaptive kernel estimate) did not differ significantly between species during either the breeding or nonbreeding season.

Status and ecology of Mexican spotted owls in the Gila Region, New Mexico

Publications Posted on: March 04, 2020
The highlands of New Mexico's Gila region provide an important stronghold for the Mexican spotted owl (Strix occidentalis lucida Nelson). Historical data document that this region supported spotted owls in the past, and recent studies indicate that owls are both relatively common and well distributed in this region at present.

Improving habitat and connectivity model predictions with multi-scale resource selection functions from two geographic areas

Publications Posted on: April 08, 2019
Context: Habitat loss and fragmentation are the most pressing threats to biodiversity, yet assessing their impacts across broad landscapes is challenging. Information on habitat suitability is sometimes available in the form of a resource selection function model developed from a different geographical area, but its applicability is unknown until tested.

Harbingers of Change: Owls of Mescalero

Lab Notes Posted on: September 06, 2018
For the Mescalero Apache, the owl is a messenger. Often misconstrued as a bad omen, the owls provide a warning that it’s time to pay attention, and that “when the world is changing, we need to listen.”   

Dietary overlap between sympatric Mexican spotted and great horned owls in Arizona

Publications Posted on: August 01, 2018
We estimated diet composition of sympatric Mexican spotted (Strix occidentalis lucida, n = 7 pairs of owls) and great horned owls (Bubo virginianus, n = 4 pairs) in ponderosa pine (Pinus ponderosa) - Gambel oak (Quercus gambelii) forest, northern Arizona. Both species preyed on mammals, birds, and insects; great horned owls also ate lizards. Mammals dominated the diet of both species.

Mexican spotted owl home range and habitat use in pine-oak forest: Implications for forest management

Publications Posted on: August 01, 2018
To better understand the habitat relationships of the Mexican spotted owl (Strix occidentalis lucida), and how such relationships might influence forest management, we studied home-range and habitat use of radio-marked owls in ponderosa pine (Pinus ponderosa) Gambel oak (Quercus gambelii) forest.

Winter Movements and Range Use of Radio-marked Mexican Spotted Owls: An Evaluation of Current Management Recommendations

Publications Posted on: August 01, 2018
We summarized existing knowledge on winter movements and range and habitat use of radio-marked Mexican spotted owls. In light of that information, we evaluated the adequacy of current management guidelines. Seasonal movement or "migration" appears to be a regular feature of the winter ecology of Mexican spotted owls.

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