Download or read book Using Terrestrial Ecosystem Survey Data to Identify Potential Habitat for the Mexican Spotted Owl on National Forest System Lands written by Joseph L. Ganey and published by . This book was released on 2002 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Feasibility of a Random Quadrat Study Design to Estimate Changes in Density of Mexican Spotted Owls written by Christopher A. May and published by . This book was released on 1996 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Economic Analysis of Critical Habitat Designation for the Mexican Spotted Owl written by and published by . This book was released on 1995 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Dietary Overlap Between Sympatric Mexican Spotted and Great Horned Owls in Arizona written by Joseph L. Ganey and published by . This book was released on 2005 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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. Mammals comprised 63 and 62% of all prey items identified in diets of spotted and great horned owls, respectively, and 94 and 95% of prey biomass. Both species primarily preyed on a few groups of small mammals. Observed overlap in diet composition between species (0.95) was greater than expected based on null models of diet overlap, and the size range of prey taken overlapped entirely. Mean prey mass was similar for both species (great horned owl, 47.0 ± 7.4 g [SE], n = 94 items; spotted owl, 40.1 ± 1.8 g, n = 1,125 items). Great horned owls consumed larger proportions of diurnally active prey than spotted owls, which primarily consumed nocturnally active mammals. Our results, coupled with a previous analysis showing that these owls foraged in the same general areas (Ganey and others 1997), suggests that they could compete for food resources, which are assumed to be limiting in at least some years. They may minimize the potential for resource competition, however, by concentrating foraging activities in different habitats (Ganey and others 1997) and by foraging at different times, when different suites of prey species are active.

Download or read book Responses of Mexican Spotted Owls to Low flying Military Jet Aircraft written by Charles L. Johnson and published by . This book was released on 2002 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Of Spotted Owls Old Growth and New Policies written by Bruce G. Marcot and published by . This book was released on 1997 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Responses of Mexican Spotted Owls to Low flying Military Jet Aircraft written by Charles L. Johnson and published by . This book was released on 2002 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Preliminary Risk Assessment of the Mexican Spotted Owl Under a Spatially weighted Foraging Regime at the Los Alamos National Laboratory written by and published by . This book was released on 1997 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Threat to the Spotted Owl written by Carol Parenzan Smalley and published by Mitchell Lane. This book was released on 2020-02-04 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the ancient forests of North America lives a nocturnal hunterthe spotted owl. With its keen eyesight and hearing, it listens and watches for prey. From western Canada to Mexico, and in the states between these two countries, wildlife biologists are observing and counting spotted owls. Once abundant in number, this flying predators days on earth may be limited if changes arent made. In this book, read about out how this owl lives, what threats it faces, and what scientists and activists are doing to help it. Then find out what you can do to help save this threatened bird.

Download or read book Spotted Owl Strix Occidentalis written by Mark Zarn and published by . This book was released on 1974 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Status and Ecology of Mexican Spotted Owls in the Upper Gila Mountains Recovery Unit Arizora and New Mexico written by United States Department of Agriculture and published by CreateSpace. This book was released on 2015-02-14 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes current knowledge on the status and ecology of the Mexican spotted owl within the Upper Gila Mountains Recovery Unit (UGM RU). It was written at the request of U.S. Forest Service personnel involved in the Four Forests Restoration Initiative (4FRI), a collaborative, landscape-scale restoration effort covering approximately 2.4 million ac (1 million ha) across all or part of four National Forests (Apache-Sitgreaves, Coconino, Kaibab, and Tonto National Forests) located within the UGM RU.

Download or read book The Effects of Fire on Mexican Spotted Owls in Arizona and New Mexico written by Jeffrey S. Jenness and published by . This book was released on 2000 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The California Spotted Owl written by Jared Verner and published by . This book was released on 1992 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Spotted Owl written by Alvin Silverstein and published by . This book was released on 1994 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt: Discusses the dilemma of the spotted owl, whose existence is threatened by the destruction of its habitat--the ancient, old-growth forests.

Download or read book Population Demography of Northern Spotted Owls written by Eric Forsman and published by Univ of California Press. This book was released on 2011-07-21 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Northern Spotted Owl, a threatened species that occurs in coniferous forests in the western United States, has become a well-known environmental symbol. But how is the owl actually faring? This book contains the results of a long-term effort by a large group of leading researchers to document population trends of the Northern Spotted Owl. The study was conducted on 11 areas in the Pacific Northwest from 1985 to 2008, and its objectives were both to evaluate population trends and to assess relationships between reproductive rates and recruitment of owls and covariates such as weather, habitat, and the invasion of a closely related species, the Barred Owl. Among other findings, the study shows that fecundity was declining in five populations, stable in three, and increasing in three areas. Annual apparent survival rates of adults were declining in 10 out of 11 areas. This broad, synthetic work provides the most complete and up-to-date picture of the population status of this inconspicuous forest owl, which is at the center of the complex and often volatile debate regarding the management of forest lands in the western United States. Researchers: Steven H. Ackers Lawrence S. Andrews David R. Anderson Robert G. Anthony Brian L. Biswell Kenneth P. Burnham Peter C. Carlson Raymond J. Davis Lowell V. Diller Katie M. Dugger Eric D. Forsman Alan B. Franklin Elizabeth M. Glenn Scott A. Gremel Dale R. Herter J. Mark Higley James E. Hines Robert B. Horn Joseph B. Lint James D. Nichols Janice A. Reid James P. Schaberl Carl J. Schwarz Thomas J. Snetsinger Stan G. Sovern Gary C. White

Download or read book Final Environmental Impact Statement on Management for the Northern Spotted Owl in the National Forests written by and published by . This book was released on 1992 with total page 396 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Lives of North American Birds written by Kenn Kaufman and published by Houghton Mifflin Harcourt. This book was released on 1996 with total page 708 pages. Available in PDF, EPUB and Kindle. Book excerpt: The bestselling natural history of birds, lavishly illustrated with 600 colorphotos, is now available for the first time in flexi binding.