Download or read book Status and Habitat Use of California Bighorn Sheep on Hart Mountain Oregon written by Christine Anne Kornet and published by . This book was released on 1978 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: California bighorn sheep (Ovis canadensis californiana) were studied on Hart Mountain, Oregon, during the summer and fall of 1976, and the spring of 1977. The population consisted of a minimum of 196 sheep in June, 1977. The high number of lambs observed and high lamb:ewe ratios throughout both years of the study indicated that the population was expanding rapidly. Sheep occupied about 85 percent of the length of the mountain; ewe-lamb groups occupied 25 percent. Both ewes and rains occurred on two distinct ranges during all seasons, and interchange of individuals between the two ranges was minimal during the study. Most rutting activity occurred during November. Lambs were born between mid-April and late May. Fifteen habitats within the ewe-lamb range were identified and sampled for plant species composition. A habitat preference value (HPV) was calculated for each habitat on Hart Mountain, based on use by ewe groups. Bluebunch wheatgrass (Agropyron spicatum) and big sagebrush (Artemisia tridentata) were the two most widely distributed plant species in the ewe-lamb range; Idaho fescue (Festuca idahoensis) provided the greatest amount of herbaceous cover. Daily activities of ewe groups centered around four contiguous bedding grounds and three principal feeding areas. Topography, as well as vegetational composition, appeared to influence the preference of ewes for certain locations, particularly for major cliff formations and adjacent feeding\ areas. Habitat factors unique to the present ewe-lamb range are discussed as possible determinants of its location.

Download or read book Habitat Use and Population Characteristics of Bighorn Sheep on Hart Mountain National Antelope Refuge Oregon written by David Carl Payer and published by . This book was released on 1992 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Status and Habitat Preference of California Bighorn Sheep on Sheldon National Wildlife Refuge Nevada written by Michael Charles Hansen and published by . This book was released on 1982 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt: A herd of California bighorn sheep (Ovis canadensis californiana), re-introduced to the area of Hell Creek on the Sheldon National Wildlife Refuge in northwestern Nevada, was studied from 15 June 1978 to 20 August 1980. Major vegetation and physiographic types were delineated and described. Habitat preferences were determined from field observations of sheep use of both vegetation and physiographic habitat components. Sheep displayed preference in their use of habitat components during all seasons; greatest selection was shown by the ewe/ lamb band for physiographic types associated with escape cover in spring, and for vegetation types associated with quality forage in winter. Rams generally displayed less selective habitat use than did the ewe/lamb band. The population was relatively stable at 30-35 individuals, following the initial post-introduction period of rapid growth. It was hypothesized that high quality lambing terrain was limited in quantity within the present ewe/lamb range, and that expansion of the ewe/lamb range to include the nearby Boulder Spring and Virgin Canyon areas would promote substantial population increase. Water was available during all seasons. Spring use of mineral licks may have been related to seasonal mineral deficiency associated with tissue and/or milk production. Activity patterns suggested that sheep adapted their daily activities to fit local, seasonal situations.

Download or read book Population Characteristics and Habitat Utilization of Bighorn Sheep Steens Mountain Oregon written by Walter A. Van Dyke and published by . This book was released on 1978 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt: A herd of re-introduced California bighorn sheep (Ovis canadensis californiana) was studied from 15 June 1976 to 31 August 1977. Thirteen major and seven minor habitats were delineated and described. Habitat use by bighorns was observed throughout the study and a habitat preference value (H.P.V.) was calculated based on use by ewe-lamb groups. Certain habitats were highly preferred for foraging or resting by bighorns during different seasons of the year, probably because of the physical and vegetative characteristics they offered. Examination of daily activity patterns of ewe-lamb groups revealed that they primarily fed in the morning, rested at mid-day, and again fed toward evening during all seasons. Comparison of the activity budgets (time allotment for the various activities) between the sex and age groups within seasons disclosed statistical differences in all seasons. In spring lambs foraged less and pursued other activities more than ewes or rams. In summer, rams foraged less than lambs and lambs foraged less than ewes. The reverse trend was noted for resting activity. These trends were probably related energy demands of each sex and age class. In fall and winter no difference was found between the activity budgets of ewes and lambs. Adult rams, however, spent less time foraging and more time resting and pursuing other activities than ewes or lambs. This was related to energy demands and the rut. Estimated herd size fluctuated between 128 and 180 individuals with most of the change attributable to birth and subsequent mortality of lambs. Factors responsible for lamb mortality were not identified but losses appeared related to parasites and disease; Between 1976 and 1977 the population increased very little.

Download or read book Mountain Sheep of North America written by Raul Valdez and published by University of Arizona Press. This book was released on 2021-11-09 with total page 368 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mountain sheep epitomize wilderness for many people because they occupy some of the most inaccessible and rugged habitats known to man, from desert crags to alpine mountains. But of all hoofed mammals in North America, wild sheep present the greatest management problems to biologists. This book is a major reference on the natural history, ecology, and management of wild sheep in North America. Written by wildlife biologists who have devoted years of study to the animals, it covers Dall's and Stone's sheep and Rocky Mountain, California, and desert bighorn and examines a variety of factors pertinent to their life histories: habitat, diet, activity, social organization, reproduction, and population dynamics. Additional chapters consider distribution and abundance, adaptive strategies, and management guidelines. Discussions on diseases of wild sheep present a wealth of information that will be of particular use to wildlife biologists, including detailed clinical descriptions of conditions that threaten sheep populations, from pasteurellosis to capture myopathy. An appendix reviews the cytogenetics and genetics of wild sheep. North American wild sheep may face extinction in many areas unless critical questions concerning their management are answered soon. Prior to the publication of this book, there was no single reference available in which one could find such a synthesis of information. Mountain Sheep of North America provides that source and points toward the preservation of these magnificent wild creatures.

Download or read book Wildlife Habitats in Managed Rangelands written by Walter A. Van Dyke and published by . This book was released on 1983 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wildlife Habitats in Managed Rangelands written by Walter A. Van Dyke and published by . This book was released on 1983 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hart Mountain Bighorn Sheep Double Tap written by Gavin L. Weaver and published by . This book was released on 2015-09-30 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: A short story on my Bighorn Sheep Hunting experience on Hart Mountain Wildlife Refuge in Oregon. A Once in A Lifetime Hunt that was shared with great people and has provided me great memories. Included are pictures from the experience including scouting photos and photos of the rams harvested.

Download or read book General Technical Report PNW written by and published by . This book was released on 1978 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Desert Bighorn Sheep written by Norman S. Smith and published by . This book was released on 1988 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Wildlife Habitats in Managed Rangelands written by J. Edward Dealy and published by . This book was released on 1981 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plant communities in the Great Basin of southeastern Oregon are described, and a field key is provided. The value of a plant communitys vertical and horizontal structure and the seasonal availability of its forage are examined in relation to wildlife habitat in managed rangelands. Further, the importance of individual and combined plant communities to wildlife in managed rangelands is discussed, and management alternatives are presented.

Download or read book Hart Mountain National Antelope Refuge CMP Lake County written by and published by . This book was released on 1994 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proposed Northern Eastern Colorado Desert Coordinated Management Plan written by United States. Bureau of Land Management. California Desert District and published by . This book was released on 2002 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Technical Report written by and published by . This book was released on 1981 with total page 574 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Annual Meeting Desert Bighorn Council written by Desert Bighorn Council and published by . This book was released on 1980 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Sheldon National Wildlife Refuge Renewable Natural Resources Management Plan written by U.S. Fish and Wildlife Service. Region 1 and published by . This book was released on 1980 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Recovery Plan for Bighorn Sheep in the Peninsular Ranges California written by Esther Rubin and published by . This book was released on 2000 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: