| Territoriality and non-random mating in sage grouse, Centrocercus urophaslanus. | Wiley, R.H. | 1973 |
Territoriality and non-random mating in sage grouse, Centrocercus urophaslanus.KeywordsNo keywords available AbstractNo abstract available AuthorsWiley, R.H. Year Published1973 PublicationAnimal Behav Monogr Locations |
| The strut display of male sage grouse: a 'fixed' action pattern. | Wiley, R.H. | 1973 |
The strut display of male sage grouse: a 'fixed' action pattern.KeywordsNo keywords available AbstractNo abstract available AuthorsWiley, R.H. Year Published1973 PublicationBehaviour Locations |
| Forb Nutrient Density for Sage Grouse Broods in Mountain Big Sagebrush Communities, Montana | Whitehurst, William | 2013 |
Keywordsmountain big sagebrush, forbs, sage grouse, sage grouse brood survival, forb nutrient density, sagebrush canopy cover, sagebrush composition by weight, total digestible nutrients, crude protein, calcium, phosphorus AbstractSage grouse and grazing livestock numbers have both decreased dramatically over the last half of the 20th century.
Forb density is critical for preincubating sage grouse hens and survival of young broods.
Although sagebrush is needed for sage grouse cover and winter feed, recommended canopy cover levels may be too high to create a forb-rich herbaceous understory.
Higher forb nutrient density for breeding hens and young broods could be achieved with targeted cattle grazing and selective thinning of mature mountain big sagebrush stands. AuthorsWhitehurst, William and Marlow, Clayton Year Published2013 PublicationRangelands LocationsDOI10.2111/RANGELANDS-D-13-00002.1 |
| Preference of Wintering Sage Grouse for Big Sagebrush | WELCH, BL | 1991 |
KeywordsNo keywords available AbstractA study determined sage grouse (Centrocercus urophasianus) preference for 3 subspecies and 9 accessions of big sagebrush (Artemisia tridentata Nutt.). The subspecies were mountain big sagebrush (A. t. ssp. vaseyana Rydb. Beetle), Wyoming big sagebrush (A. t. ssp. wyomingensis Beetle and Young), and basin big sagebrush (A. t. ssp. tridentata Nutt.). Accessions were collected at various sites in Utah and established in a uniform garden. Eleven plants for each accession or 33 plants for each subspecies were planted at random on a 2.13-m grid for a total of 99 plants. An enclosure with a top was constructed. Six birds were captured and placed in the garden. Preference was measured by the number of bites taken during the study and by estimates of percentage of leaves eaten at the end of the study. Results, by order of preference, were mountain big sagebrush, Wyoming big sagebrush, and basin big sagebrush. Within the most preferred subspecies there was distinct preference among accessions as measured by bite counts. When the forage of preferred subspecies or accessions was exhausted, the birds readily ate other subspecies or accessions. AuthorsWELCH, BL; WAGSTAFF, FJ; ROBERSON, JA Year Published1991 PublicationJournal of Range Management LocationsDOI10.2307/4002745 |
| Strutting sounds and strutting: Posturing of two Utah sage grouse populations | Welch, BL | 1995 |
Strutting sounds and strutting: Posturing of two Utah sage grouse populationsKeywordsNo keywords available AbstractSound and video tape recordings and still pictures were taken of two populations of strutting male sage grouse (Centrocercus urophasianus). The two populations studied were from the Strawberry Valley and Parker Mountains. Sixteen elements of sounds were identified in the strutting sequence. These elements were the same for both populations. Video tape and still picture analysis revealed that both populations were similar in posturing during the strutting sequence. We concluded that the Parker Mountains sage grouse population is suitable in terms of breeding display behavior to augment the Strawberry Valley population. Sexual compatibility would need to be determined in future studies. AuthorsWelch, BL; Cox, CL; Sales, TK Year Published1995 PublicationUSDA Forest Service Intermountain Research Station Research Paper Locations |
| SAGE GROUSE STATUS AND RECOVERY PLAN FOR STRAWBERRY VALLEY, UTAH | WELCH, BL | 1990 |
SAGE GROUSE STATUS AND RECOVERY PLAN FOR STRAWBERRY VALLEY, UTAHKeywordsNo keywords available AbstractSince 1939, an estimated 3,000 sage grouse in Strawberry Valley, UT, have declined to some 180 birds, mainly because of reservoir construction and eradication of big sagebrush to promote livestock forage. A 4-year study of numbers and movements of radio-tagged grouse has provided the basis for a recovery program calling for rejuvenation of big sage-brush and forbs important to grouse, replacement of mating grounds lost to human activities, consideration of sage grouse biology in management decisions, and formation of a sage grouse recovery team. AuthorsWELCH, BL; WAGSTAFF, FJ; WILLIAMS, RL Year Published1990 PublicationUSDA Forest Service Intermountain Research Station Research Paper Locations |
| MONOTERPENOID CONTENT OF SAGE GROUSE INGESTA | WELCH, BL | 1989 |
MONOTERPENOID CONTENT OF SAGE GROUSE INGESTAKeywordsNo keywords available AbstractNo abstract available AuthorsWELCH, BL; PEDERSON, JC; RODRIGUEZ, RL Year Published1989 PublicationJournal of Chemical Ecology Locations |
| SELECTION OF BIG SAGEBRUSH BY SAGE GROUSE | WELCH B L | 1988 |
SELECTION OF BIG SAGEBRUSH BY SAGE GROUSEKeywordsNo keywords available AbstractFeeding sites of wintering sage grouse (Centrocercus urophasianus) were located, one each in stands of three subspecies of big sagebrush (Artemisia tridentata: ssp. tridentata, basin; ssp. vaseyana, mountain, and spp. wyomingensis. Wyoming [USA]). Evidences of differential use of plants within subspecies were observed. Whole leaves from fed-on and nonfed-on big sagebrush plants were examined for intrasubspecies chemical comparisons of crude protein, phosphorus, in vitro digestibility, and monoterpenoids. No significant differences were detected except for in vitro digestibility of Wyoming fed-on and nonfed-on big sagebrush and monoterpenoid content of basin big sagebrush. Nutritive content of all three subspecies was high, which may in part help to explain wintering sage grouse weight gains. AuthorsWELCH B L; PEDERSON J C; RODRIGUEZ R L Year Published1988 PublicationGreat Basin Naturalist Locations |
| A new species of nematode worm from the sage grouse | WEHR, EVERETT E. | 1931 |
A new species of nematode worm from the sage grouseKeywordsNo keywords available AbstractHabronema urophasiana* (p. 1), Montana, from gizzard of a sage grouse, Centro-cercus urophasianus. Key to North American spp. of Habronema in birds. AuthorsWEHR, EVERETT E. Year Published1931 PublicationProc U S Nation Mus Locations |
| Landscape features and weather influence nest survival of a ground-nesting bird of conservation concern, the greater sage-grouse, in human-altered environments. | Webb, Stephen L. | 2012 |
Keywordsbehavior, Centrocercus urophasianus, conservation, greater sage-grouse, depredation, generalized linear mixed model, management, nest survival, weather AbstractIntroduction: Ground-nesting birds experience high levels of nest predation. However, birds can make selection decisions related to nest site location and characteristics that may result in physical, visual, and olfactory impediments to predators. Methods: We studied daily survival rate (DSR) of greater sage-grouse (Centrocercus urophasianus) from 2008 to 2010 in an area in Wyoming experiencing large-scale alterations to the landscape. We used generalized linear mixed models to model fixed and random effects, and a correlation within nesting attempts, individual birds, and years. Results: Predation of the nest was the most common source of nest failure (84.7%) followed by direct predation of the female (13.6%). Generally, landscape variables at the nest site (= 30 m) were more influential on DSR of nests than features at larger spatial scales. Percentage of shrub canopy cover at the nest site (15-m scale) and distances to natural gas wells and mesic areas had a positive relationship with DSR of nests, whereas distance to roads had a negative relationship with DSR of nests. When added to the vegetation model, maximum wind speed on the day of nest failure and a 1-day lag in precipitation (i.e., precipitation the day before failure) improved model fit whereby both variables negatively influenced DSR of nests. Conclusions: Nest site characteristics that reduce visibility (i.e., shrub canopy cover) have the potential to reduce depredation, whereas anthropogenic (i.e., distance to wells) and mesic landscape features appear to facilitate depredation. Last, predators may be more efficient at locating nests under certain weather conditions (i.e., high winds and moisture). AuthorsWebb, Stephen L.; Olson, Chad V.; Dzialak, Matthew R.; Harju, Seth M.; Winstead, Jeffrey B.; Lockman, Dusty Year Published2012 PublicationEcological Processes LocationsDOI10.1186/2192-1709-1-4 |
