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Journal articles on the topic 'Centrocercus urophasianus'

Author: Grafiati

Published: 4 June 2021

Last updated: 12 February 2022

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1

Aldridge, Cameron L., Sara J. Oyler-McCance, and R. Mark Brigham. "Occurrence of Greater Sage-Grouse × Sharp-Tailed Grouse Hybrids in Alberta." Condor 103, no. 3 (August 1, 2001): 657–60. http://dx.doi.org/10.1093/condor/103.3.657.

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Abstract Two distinct grouse were regularly observed at two Greater Sage-Grouse (Centrocercus urophasianus) leks in both 1999 and 2000 in southeastern Alberta. Physically and behaviorally, the birds exhibited characteristics of both Greater Sage-Grouse and Sharp-tailed Grouse (Tympanuchus phasianellus), suggesting they were hybrids. DNA analyses of blood and feather samples indicated that both birds were males with Greater Sage-Grouse mothers and thus, fathers that were likely Sharp-tailed Grouse. Ocurrencia de Híbridos entre Centrocercus urophasianus y Tympanuchus phasianellus en Alberta Resumen. Dos aves distintivas fueron observadas con regularidad en dos asambleas de cortejo de Centrocercus urophasianus en el sureste de Alberta tanto en 1999 como en 2000. Las aves presentaban características físicas y de comportamiento tanto de C. urophasianus como de Tympanuchus phasianellus, lo que sugiere que se trataba de individuos híbridos. Análisis de ADN extraído de muestras de sangre y plumas indicaron que ambos individuos eran machos hijos de hembras de C. urophasianus. Por tanto, sus padres probablemente eran T. phasianellus.

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2

Spurrier, Margo Frost, Mark S. Boyce, and Bryan F. J. Manly. "Lek behaviour in captive sage grouse Centrocercus urophasianus." Animal Behaviour 47, no. 2 (February 1994): 303–10. http://dx.doi.org/10.1006/anbe.1994.1043.

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3

Schroeder, Michael A., Cameron L. Aldridge, Anthony D. Apa, Joseph R. Bohne, Clait E. Braun, S. Dwight Bunnell, John W. Connelly, et al. "Distribution of Sage-Grouse in North America." Condor 106, no. 2 (May 1, 2004): 363–76. http://dx.doi.org/10.1093/condor/106.2.363.

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Abstract We revised distribution maps of potential presettlement habitat and current populations for Greater Sage-Grouse (Centrocercus urophasianus) and Gunnison Sage- Grouse (C. minimus) in North America. The revised map of potential presettlement habitat included some areas omitted from previously published maps such as the San Luis Valley of Colorado and Jackson area of Wyoming. Areas excluded from the revised maps were those dominated by barren, alpine, and forest habitats. The resulting presettlement distribution of potential habitat for Greater Sage-Grouse encompassed 1 200 483 km2, with the species' current range 668 412 km2. The distribution of potential Gunnison Sage-Grouse habitat encompassed 46 521 km2, with the current range 4787 km2. The dramatic differences between the potential presettlement and current distributions appear related to habitat alteration and degradation, including the adverse effects of cultivation, fragmentation, reduction of sagebrush and native herbaceous cover, development, introduction and expansion of invasive plant species, encroachment by trees, and issues related to livestock grazing. Distribución de Centrocercus spp. en América del Norte Resumen. Revisamos los mapas de distribución potencial precolombino y de poblaciones actuales de Centrocerus urophasianus y C. minimus en América del Norte. El mapa modificado de hábitat potencial precolombino incluyó algunas áreas omitidas de mapas anteriormente publicados, como el Valle San Luis de Colorado y el área de Jackson, Wyoming. Las áreas excluídas de los mapas modificados fueron las dominadas por hábitats forestales, alpinos y estériles. La distribución precolombina resultante para C. urophasianus abarcó 1 200 483 km2, con un territorio actual de 668 412 km2. La distribución de habitat potencial para C. minimus abarcó 46 521 km2, con un territorio actual de 4787 km2. Estos contrastes tan marcados parecen estar relacionados con la modificación y degradación del hábitat, incluyendo los efectos nocivos de la agricultura, la fragmentación de hábitat, la disminución de Artemisia spp. y otras coberturas herbáceas nativas, el desarollo, la introducción y la expansión de especies de plantas invasoras, la invasión de árboles y cuestiones relacionadas con pastoreo de ganado.

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4

Dailey, Rebecca N., Merl F. Raisbeck, Roger S. Siemion, and Todd E. Cornish. "Liver Metal Concentrations in Greater Sage-grouse (Centrocercus urophasianus)." Journal of Wildlife Diseases 44, no. 2 (April 2008): 494–98. http://dx.doi.org/10.7589/0090-3558-44.2.494.

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5

Reese, Kerry P., and John W. Connelly. "Translocations of sage grouse Centrocercus urophasianus in North America." Wildlife Biology 3, no. 1 (January 1997): 235–41. http://dx.doi.org/10.2981/wlb.1997.029.

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6

Fletcher, Quinn E., Craig W. Dockrill, D. Joanne Saher, and Cameron L. Aldridge. "Northern Harrier, Circus cyaneus, Attacks on Greater Sage-Grouse, Centerocercus urophasianus, in Southern Alberta." Canadian Field-Naturalist 117, no. 3 (July 1, 2003): 479. http://dx.doi.org/10.22621/cfn.v117i3.814.

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The Greater Sage-Grouse (Centrocercus urophasianus) is an endangered species in Canada, making it critical to understand all known causes of mortality. We report the first recorded observations of female Northern Harrier (Circus cyaneus) attacks on male Greater Sage-Grouse. Although no attacks were successful, our observations suggest that Northern Harriers are predators of Greater Sage-Grouse.

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7

Aldridge, Cameron L., and R. Mark Brigham. "Nesting and Reproductive Activities of Greater Sage-Grouse in a Declining Northern Fringe Population." Condor 103, no. 3 (August 1, 2001): 537–43. http://dx.doi.org/10.1093/condor/103.3.537.

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Abstract In Canada, Greater Sage-Grouse (Centrocercus urophasianus) are at the northern edge of their range, occurring only in southeastern Alberta and southwestern Saskatchewan. The population in Canada has declined by 66% to 92% over the last 30 years. We used radio-telemetry to follow 20 female Greater Sage-Grouse and monitor productivity in southeastern Alberta, and to assess habitat use at nesting and brood-rearing locations. All females attempted to nest. Mean clutch size (7.8 eggs per nest) was at the high end of the normal range for sage-grouse (typically 6.6–8.2). Nest success (46%) and breeding success (55%) were within the range found for more southerly populations (15% to 86% and 15% to 70%, respectively). Thirty-six percent of unsuccessful females attempted to renest. Fledging success was slightly lower than reported in other studies. Thus, reproductive effort does not appear to be related to the population decline. However, chick survival to ≥50 days of age (mean = 18%) was only about half of that estimated (35%) for a stable or slightly declining population, suggesting that chick survival may be the most important factor reducing overall reproductive success and contributing to the decline of Greater Sage-Grouse in Canada. Actividades de Anidación y Reproducción de Centrocercus urophasianus en una Población del Extremo Norte en Declive Resumen. En Canadá, Centrocercus urophasianus está en el extremo norte de su distribución, encontrándose sólo en el sureste de Alberta y el suroeste de Saskatchewan. La población de Canadá ha disminuido entre el 66% y 92% durante los últimos 30 años. Utilizamos radio-telemetría para seguir a 20 hembras de C. urophasianus y monitorear su productividad en el sureste de Alberta y para evaluar el uso de hábitat en sitios de anidación y de cría de los pichones. Todas las hembras intentaron anidar. El tamaño promedio de la nidada (7.8 huevos por nido) estuvo en el extremo superior del rango normal de C. urophasianus (típicamente 6.6–8.2). El éxito de anidación (46%) y de reproducción (55%) estuvieron dentro de los rangos encontrados en poblaciones de más al sur (15% a 86% y 15% a 70%, respectivamente). El treinta y seis por ciento de las hembras que no tuvieron éxito intentaron volver a anidar. El éxito en la crianza de polluelos hasta la etapa de volantones fue ligeramente menor que el reportado en otros estudios. Por lo tanto, el esfuerzo reproductivo no parece estar relacionado con el declive poblacional. Sin embargo, la supervivencia de los polluelos hasta 50 días de edad o más (promedio = 18%) fue sólo aproximadamente la mitad de lo que se ha estimado para una población estable o en ligero declive (35%), lo que sugiere que la supervivencia de los pichones podría ser el factor más importante reduciendo el éxito reproductivo en general y contribuyendo al declive de C. urophasianus en Canadá.

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8

Sinai, Nancy L., Peter S. Coates, Katelyn M. Andrle, Chad Jefferis, C. Gabriel Sentíes–Cué, and Maurice E. Pitesky. "A Serosurvey of Greater Sage-Grouse (Centrocercus urophasianus) in Nevada, USA." Journal of Wildlife Diseases 53, no. 1 (January 2017): 136–39. http://dx.doi.org/10.7589/2015-10-285.

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9

Taylor, S. E., S. J. Oyler-Mccance, and T. W. Quinn. "Isolation and characterization of microsatellite loci in Greater Sage-Grouse (Centrocercus urophasianus)." Molecular Ecology Notes 3, no. 2 (June 2003): 262–64. http://dx.doi.org/10.1046/j.1471-8286.2003.00424.x.

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10

Young, Jessica R., Jerry W. Hupp, Jack W. Bradbury, and Clait E. Braun. "Phenotypic divergence of secondary sexual traits among sage grouse, Centrocercus urophasianus, populations." Animal Behaviour 47, no. 6 (June 1994): 1353–62. http://dx.doi.org/10.1006/anbe.1994.1183.

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11

Davis, Dawn M., Kerry P. Reese, Scott C. Gardner, and Krista L. Bird. "Genetic structure of Greater Sage-Grouse (Centrocercus urophasianus) in a declining, peripheral population." Condor 117, no. 4 (November 2015): 530–44. http://dx.doi.org/10.1650/condor-15-34.1.

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12

Cross, Todd B., David E. Naugle, John C. Carlson, and Michael K. Schwartz. "Genetic recapture identifies long-distance breeding dispersal in Greater Sage-Grouse (Centrocercus urophasianus)." Condor 119, no. 1 (February 2017): 155–66. http://dx.doi.org/10.1650/condor-16-178.1.

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13

Bird, Krista L. "Observation of Polyandry in Endangered Greater Sage-Grouse (Centrocercus urophasianus) in Alberta, Canada." Northwestern Naturalist 94, no. 3 (January 2013): 247–52. http://dx.doi.org/10.1898/13-06.1.

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14

Connelly, John W., and Clait E. Braun. "Long-term changes in sage grouse Centrocercus urophasianus populations in western North America." Wildlife Biology 3, no. 1 (January 1997): 229–34. http://dx.doi.org/10.2981/wlb.1997.028.

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15

Atamian, Michael T., and James S. Sedinger. "Balanced Sex Ratio at Hatch in a Greater Sage-Grouse (Centrocercus urophasianus) Population." Auk 127, no. 1 (January 2010): 16–22. http://dx.doi.org/10.1525/auk.2009.09136.

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16

Blomberg, Erik J., Simon R. Poulson, James S. Sedinger, and Daniel Gibson. "Prefledging diet is correlated with individual growth in Greater Sage-Grouse (Centrocercus urophasianus)." Auk 130, no. 4 (October 2013): 715–24. http://dx.doi.org/10.1525/auk.2013.12188.

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17

Reese, Kerry P., John W. Connelly, Edward O. Garton, and Michelle L. Commons-Kemner. "Exploitation and greater sage-grouse Centrocercus urophasianus: a response to Sedinger and Rotella." Wildlife Biology 11, no. 4 (December 2005): 377–81. http://dx.doi.org/10.2981/0909-6396(2005)11[377:eagscu]2.0.co;2.

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18

Rabon, J. C., C. M. V. Nuñez, P. S. Coates, M. A. Ricca, and T. N. Johnson. "Ecological correlates of fecal corticosterone metabolites in female Greater Sage-Grouse (Centrocercus urophasianus)." Canadian Journal of Zoology 99, no. 9 (September 2021): 812–22. http://dx.doi.org/10.1139/cjz-2020-0258.

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Measurement of physiological responses can reveal effects of ecological conditions on an animal and correlate with demographic parameters. Ecological conditions for many animal species have deteriorated as a function of invasive plants and habitat fragmentation. Expansion of juniper (genus Juniperus L.) trees and invasion of annual grasses into sagebrush (genus Artemisia L.) ecosystems have contributed to habitat degradation for Greater Sage-Grouse (Centrocercus urophasianus (Bonaparte, 1827); hereinafter Sage-Grouse), a species of conservation concern throughout its range. We evaluated relationships between habitat use in a landscape modified by juniper expansion and annual grasses and corticosterone metabolite levels (stress responses) in feces (FCORTm) of female Sage-Grouse. We used remotely sensed data to estimate vegetation cover within the home ranges of hens and accounted for factors that influence FCORTm in other vertebrates, such as age and weather. We collected 35 fecal samples from 22 radio-collared hens during the 2017–2018 brood-rearing season (24 May–26 July) in southwestern Idaho (USA). Concentrations of corticosterone increased with home range size but decreased with reproductive effort and temperature. The importance of home range size suggests that maintaining or improving habitats that promote smaller home ranges would likely facilitate a lower stress response by hens, which should benefit Sage-Grouse survival and reproduction.

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19

Dantzker, M. S., G. B. Deane, and J. W. Bradbury. "Directional acoustic radiation in the strut display of male sage grouse Centrocercus urophasianus." Journal of Experimental Biology 202, no. 21 (November 1, 1999): 2893–909. http://dx.doi.org/10.1242/jeb.202.21.2893.

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We present evidence that the acoustic component of the strut display of male sage grouse Centrocercus urophasianus is highly directional and that the nature of this directionality is unique among measured vertebrates. Where vertebrate acoustic signals have been found to be directional, they are most intense anteriorly and are bilaterally symmetrical. Our results show that sage grouse acoustic radiation (beam) patterns are often asymmetric about the birds' anterior-posterior axis. The beam pattern of the ‘whistle’ note is actually strikingly bilobate with a deep null directly in front of the displaying bird. While the sage grouse display serves to attract potential mates, male sage grouse rarely face females head on when they call. The results of this study suggest that males may reach females with a high-intensity signal despite their preference for an oblique display posture relative to those females. We characterized these patterns using a novel technique that allowed us to map acoustic radiation patterns of unrestrained animals calling in the wild. Using an eight-microphone array, our technique integrates acoustic localization with synchronous pressure-field measurements while controlling for small-scale environmental variation in sound propagation.

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20

Hagen, Christian A., John W. Connelly, and Michael A. Schroeder. "A Meta-analysis of Greater Sage-grouse Centrocercus urophasianus Nesting and Brood-rearing Habitats." Wildlife Biology 13, sp1 (July 2007): 42–50. http://dx.doi.org/10.2981/0909-6396(2007)13[42:amogsc]2.0.co;2.

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21

Shirk, Andrew J., Michael A. Schroeder, Leslie A. Robb, and Samuel A. Cushman. "Empirical validation of landscape resistance models: insights from the Greater Sage-Grouse (Centrocercus urophasianus)." Landscape Ecology 30, no. 10 (May 15, 2015): 1837–50. http://dx.doi.org/10.1007/s10980-015-0214-4.

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22

Schulwitz, Sarah, Bryan Bedrosian, and Jeff A. Johnson. "Low neutral genetic diversity in isolated Greater Sage-Grouse (Centrocercus urophasianus) populations in northwest Wyoming." Condor 116, no. 4 (November 2014): 560–73. http://dx.doi.org/10.1650/condor-14-54.1.

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23

Dinkins, Jonathan B., Michael R. Conover, Christopher P. Kirol, and Jeffrey L. Beck. "Greater Sage-Grouse (Centrocercus urophasianus) select nest sites and brood sites away from avian predators." Auk 129, no. 4 (October 2012): 600–610. http://dx.doi.org/10.1525/auk.2012.12009.

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24

Gibson, Daniel, Erik J. Blomberg, Michael T. Atamian, Shawn P. Espinosa, and James S. Sedinger. "Effects of power lines on habitat use and demography of greater sage-grouse (Centrocercus urophasianus)." Wildlife Monographs 200, no. 1 (October 23, 2018): 1–41. http://dx.doi.org/10.1002/wmon.1034.

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25

Holloran, Matthew J., and Stanley H. Anderson. "Direct Identification of Northern Sage-grouse, Centrocercus urophasianus, Nest Predators Using Remote Sensing Cameras." Canadian Field-Naturalist 117, no. 2 (April 1, 2003): 308. http://dx.doi.org/10.22621/cfn.v117i2.804.

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The status and apparent decline of Sage-grouse (Centrocercus spp.) has been of increasing concern and lower nesting success could be contributing to population declines. Our objective was to directly identify Sage-grouse nest predators. Following visual confirmation of radio-marked Sage-grouse nest establishment in 1997-1999, we installed automatic 35 mm cameras controlled by an active infrared monitor. Of 26 nests monitored by cameras, 22 successfully hatched and four were unsuccessful. American Elk (Cervus canadensis), Badger (Taxidea taxus), and Black-billed Magpie (Pica hudsonia) destroyed three of the four unsuccessful nests, and domestic cattle caused abandonment of the fourth. Richardson’s (Spermophilus richardsonii) and Thirteen-lined Ground Squirrels (S. tridecemlineatus) were recorded at nests, but were not detected in predation.

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26

Fike, Jennifer A., Sara J. Oyler-McCance, Shawna J. Zimmerman, and Todd A. Castoe. "Development of 13 microsatellites for Gunnison Sage-grouse (Centrocercus minimus) using next-generation shotgun sequencing and their utility in Greater Sage-grouse (Centrocercus urophasianus)." Conservation Genetics Resources 7, no. 1 (September 24, 2014): 211–14. http://dx.doi.org/10.1007/s12686-014-0336-z.

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27

Dinkins, Jonathan B., Michael R. Conover, Christopher P. Kirol, Jeffrey L. Beck, and Shandra Nicole Frey. "Greater Sage-Grouse (Centrocercus urophasianus) select habitat based on avian predators, landscape composition, and anthropogenic features." Condor 116, no. 4 (November 2014): 629–42. http://dx.doi.org/10.1650/condor-13-163.1.

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28

Harju, Seth M., Chad V. Olson, Matthew R. Dzialak, James P. Mudd, and Jeff B. Winstead. "A Flexible Approach for Assessing Functional Landscape Connectivity, with Application to Greater Sage-Grouse (Centrocercus urophasianus)." PLoS ONE 8, no. 12 (December 13, 2013): e82271. http://dx.doi.org/10.1371/journal.pone.0082271.

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29

Row, Jeffrey R., Sara J. Oyler-McCance, and Bradley C. Fedy. "Differential influences of local subpopulations on regional diversity and differentiation for greater sage-grouse (Centrocercus urophasianus)." Molecular Ecology 25, no. 18 (September 2016): 4424–37. http://dx.doi.org/10.1111/mec.13776.

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30

Krakauer, A. H., M. Tyrrell, K. Lehmann, N. Losin, F. Goller, and G. L. Patricelli. "Vocal and anatomical evidence for two-voiced sound production in the greater sage-grouse Centrocercus urophasianus." Journal of Experimental Biology 212, no. 22 (October 30, 2009): 3719–27. http://dx.doi.org/10.1242/jeb.033076.

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31

Schulwitz, Sarah, Jeff Johnson, and Bryan Bedrosian. "Low Neutral Genetic Diversity in an Isolated Greater Sage Grouse (Centrocercus Urophasianus) Population in Northwest Wyoming." UW National Parks Service Research Station Annual Reports 35 (January 1, 2012): 119–33. http://dx.doi.org/10.13001/uwnpsrc.2012.3943.

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Habitat loss is well recognized as an immediate threat to biodiversity. Depending on the dispersal capabilities of the species, increased habitat fragmentation often results in reduced functional connectivity and gene flow followed by population decline and a higher likelihood of eventual extinction. Knowledge of the degree of connectivity between populations is therefore crucial for better management of small populations in a changing landscape. A small population of greater sage-grouse (Centrocercus urophasianus) exists in northwest Wyoming within the Jackson Hole valley, including Grand Teton National Park and the National Elk Refuge. To what degree the Jackson population is isolated is not known as natural dispersal barriers in the form of mountains and anthropogenic habitat fragmentation may limit the populationâs connectivity to adjacent populations. Using 16 microsatellite loci and 300 greater sage-grouse samples collected throughout Wyoming and southeast Montana, significant population differentiation was found to exist among populations. Results indicated that the Jackson population was isolated relative to the other sampled populations, including Pinedale, its closest neighboring large population to the south. The one exception was a small population immediately to the east of Jackson, in which asymmetric dispersal from Jackson into Gros Ventre was detected. Both Jackson and Gros Ventre populations exhibited significantly reduced levels of neutral genetic diversity relative to other sampled populations. More work is warranted to determine the timing at which Jackson and Gros Ventre populations had become isolated and whether it was primarily due to recent habitat fragmentation or more historic processes. Due to its small population size, continual monitoring of the population is recommended with the goal of at least maintaining current population size and, if possible, increasing suitable habitat and population size to levels recorded in the past.

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Dunn, Peter O., and Clait E. Braun. "Natal Dispersal and Lek Fidelity of Sage Grouse." Auk 102, no. 3 (July 1, 1985): 621–27. http://dx.doi.org/10.1093/auk/102.3.621.

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Abstract Natal dispersal and lek fidelity (attendance within and between years) of Sage Grouse (Centrocercus urophasianus) were studied on Cold Spring Mountain, northwestern Colorado, from July 1981 through May 1984. Female Sage Grouse followed the typical avian pattern of dispersing farther than males. However, there was no difference between proportions of male and female yearling grouse attending the lek closest to their juvenile banding location. Fifteen percent of all individually marked juveniles (24/157 birds) were known to have attended leks as yearlings. There was no difference between yearling and adult lek attendance rates for either sex; however, females attended leks less often than males. Yearling females, but not yearling males, visited 2 or more leks more often than adults. These differences may be related to yearlings' inexperience with breeding or to a strategy to enhance reproductive success.

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Niemuth, Neal D., and Mark S. Boyce. "Spatial and temporal patterns of predation of simulated sage grouse nests at high and low nest densities: an experimental study." Canadian Journal of Zoology 73, no. 5 (May 1, 1995): 819–25. http://dx.doi.org/10.1139/z95-096.

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We examined patterns of predation on 252 simulated sage grouse (Centrocercus urophasianus) nests placed at two densities around six active leks in southeastern Wyoming, U.S.A. Predation intensity, as measured by the frequency of multiple-nest predation events, was significantly greater at high-density sites, implying enhanced prey capture (functional and (or) numerical response) by predators. Significant spatial aggregation of nest predation further implies enhanced prey capture by predators at high prey densities. Predation varied significantly among sites, but there were no significant first-order differences in predation between densities. Predation was also significantly affected by year–density and site–year–density interactions. Several factors, including nest cover, prey defense mechanisms, study site location, nest location, year, search methods of predators, number of predators, and random encounter may inhibit or confound density-dependent nest predation. Enhanced prey capture provides a mechanism for density-dependent population regulation.

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34

Sedinger, James S., and Jay J. Rotella. "Effect of harvest on sage-grouse Centrocercus urophasianus populations: what can we learn from the current data?" Wildlife Biology 11, no. 4 (December 2005): 371–75. http://dx.doi.org/10.2981/0909-6396(2005)11[371:eohosc]2.0.co;2.

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35

Dinkins, J. B., M. R. Conover, C. P. Kirol, J. L. Beck, and S. N. Frey. "Greater Sage-Grouse (Centrocercus urophasianus) hen survival: effects of raptors, anthropogenic and landscape features, and hen behavior." Canadian Journal of Zoology 92, no. 4 (April 2014): 319–30. http://dx.doi.org/10.1139/cjz-2013-0263.

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Survival of breeding-age hens has been identified as the demographic rate with the greatest potential to influence population growth of Greater Sage-Grouse (Centrocercus urophasianus (Bonaparte, 1827); hereafter “Sage-Grouse”). During 2008–2011, we collected summer survival data from 427 Sage-Grouse hens in southern Wyoming, USA. We assessed the effects of raptor densities, anthropogenic features, landscape features, and Sage-Grouse hen behavior on Sage-Grouse hen survival. Survival of Sage-Grouse hens was positively associated with the proportion of big sagebrush (genus Artemisia L.) habitat within 0.27 km radius and road density and negatively associated with power-line density, proximity to forested habitat, and topographic ruggedness index within 0.27 km radius (TRI0.27). Raptor densities did not have individual effects on Sage-Grouse survival; however, an interaction between site-specific exposure to Golden Eagle (Aquila chrysaetos (L., 1758)) density (GOEA) and TRI0.27 indicated that negative effects of GOEA and TRI0.27 were dampened in areas with both high TRI0.27 and high GOEA. Survival of nonreproductive hens was greater than brooding or nesting hens. Hens that stayed in intermediate-size flocks and yearling hens had higher survival than hens in small or large flocks and hens >2 years old. Results indicated that risk of death for Sage-Grouse hens was greater relative to potential raptor perches but not anthropogenic and landscape variables that could provide food subsidies for predators.

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Dyer, Kathryn J., Barry L. Perryman, and Dale W. Holcombe. "SITE AND AGE CLASS VARIATION OF HEMATOLOGIC PARAMETERS FOR FEMALE GREATER SAGE GROUSE (CENTROCERCUS UROPHASIANUS) OF NORTHERN NEVADA." Journal of Wildlife Diseases 46, no. 1 (January 2010): 1–12. http://dx.doi.org/10.7589/0090-3558-46.1.1.

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37

Dunbar, Mike R., Michael A. Gregg, John A. Crawford, Mark R. Giordano, and Susan J. Tornquist. "NORMAL HEMATOLOGIC AND BIOCHEMICAL VALUES FOR PRELAYING GREATER SAGE GROUSE (CENTROCERCUS UROPHASIANUS) AND THEIR INFLUENCE ON CHICK SURVIVAL." Journal of Zoo and Wildlife Medicine 36, no. 3 (September 2005): 422–29. http://dx.doi.org/10.1638/04-065.1.

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Blickley, Jessica L., Karen R. Word, Alan H. Krakauer, Jennifer L. Phillips, Sarah N. Sells, Conor C. Taff, John C. Wingfield, and Gail L. Patricelli. "Experimental Chronic Noise Is Related to Elevated Fecal Corticosteroid Metabolites in Lekking Male Greater Sage-Grouse (Centrocercus urophasianus)." PLoS ONE 7, no. 11 (November 20, 2012): e50462. http://dx.doi.org/10.1371/journal.pone.0050462.

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Pellis, Sergio M., Melissa A. Blundell, Heather C. Bell, Vivien C. Pellis, Alan H. Krakauer, and Gail L. Patricelli. "Drawn into the vortex: The facing-past encounter and combat in lekking male greater sage-grouse (Centrocercus urophasianus)." Behaviour 150, no. 13 (2013): 1567–99. http://dx.doi.org/10.1163/1568539x-00003110.

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Lekking male greater sage-grouse (Centrocercus urophasianus) compete with neighbours not only by strutting to attract females but also by directly challenging other males. These challenges include approaching another male and adopting an anti-parallel orientation at close quarters (‘facing past encounter’) and fighting, in which the birds strike one another with their wings. Facing past encounters and facing past encounters that led to fights in free-living sage-grouse were videotaped and analysed to test predictions arising from two sets of hypotheses to account for the features of such encounters. They could be used to assess or threaten opponents (index signal or threat signal hypotheses) or they may be the result of a stalemate in which one bird’s attempts to gain an vantage point for attack are neutralised by counter moves by the other bird (combat hypothesis). Frame-by-frame analyses of both facing past encounters and fights were used to extract data to test specific predictions arising from the three hypotheses. The results, overall, support the hypothesis that the facing past orientation arises from combat. However, the results also suggest that, once in the anti-parallel orientation, opportunities emerge for communication to take place.

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Shyvers, Jessica E., Brett L. Walker, Sara J. Oyler‐McCance, Jennifer A. Fike, and Barry R. Noon. "Genetic mark‐recapture analysis of winter faecal pellets allows estimation of population size in Sage Grouse Centrocercus urophasianus." Ibis 162, no. 3 (September 3, 2019): 749–65. http://dx.doi.org/10.1111/ibi.12768.

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Zink, Robert M. "Comparison of Patterns of Genetic Variation and Demographic History in the Greater Sage-Grouse (Centrocercus urophasianus): Relevance for Conservation." Open Ornithology Journal 7, no. 1 (June 13, 2014): 19–29. http://dx.doi.org/10.2174/1874453201407010019.

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The greater sage-grouse (Centrocercus urophasianus) was once widespread in western North America but its range has contracted by an uncertain degree owing to anthropogenic and natural causes. Concern over population declines has led to its proposed listing as threatened under the U.S. Endangered Species Act. Detailed genetic and demographic analyses of this species throughout its range are available but heretofore have not been compared. Reduced genetic variability is often taken as a proxy for declining populations, but rarely are there quantitative population estimates with which to compare. I compared published mitochondrial DNA (mtDNA) control region sequences, microsatellite allele frequencies at seven loci, and estimates of numbers of males per lek, number of active leks, percent decline in the best population models, and the probability (P) of Ne < 50 in 30 years and P(Ne < 500) in 100 years, at two spatial scales, 45 local population samples and 16 larger aggregates of samples. When excluding the populations from the Columbia Basin, which show little genetic diversity and are statistical outliers, there were no consistent relationships between estimates of genetic variation and demographic trends across the remainder of the range at either spatial scale. A measure of inbreeding derived from microsatellite data was also not related to population trends. Thus, despite habitat reduction and range fragmentation, the greater sage-grouse does not exhibit expected genetic signatures of declining populations. Possibly, the mtDNA and microsatellite data are insufficiently sensitive to detect population declines that have occurred over the span of a half century. Alternatively, only when populations are reduced to the levels seen in the Columbia Basin will genetic effects be seen, suggesting that the bulk of the range of the greater sage-grouse is not currently in genetic peril.

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Schroff, Sean R., Kyle A. Cutting, Craig A. Carr, Michael R. Frisina, Lance B. McNew, and Bok F. Sowell. "Characteristics of shrub morphology on nest site selection of Greater Sage-Grouse (Centrocercus urophasianus) in high-elevation sagebrush habitat." Wilson Journal of Ornithology 130, no. 3 (September 2018): 730–38. http://dx.doi.org/10.1676/17-086.1.

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Rice, Mindy B., Liza G. Rossi, and Anthony D. Apa. "Seasonal Habitat Use by Greater Sage-Grouse (Centrocercus urophasianus) on a Landscape with Low Density Oil and Gas Development." PLOS ONE 11, no. 10 (October 27, 2016): e0165399. http://dx.doi.org/10.1371/journal.pone.0165399.

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Jankowski, M. D., D. J. Wittwer, D. M. Heisey, J. C. Franson, and E. K. Hofmeister. "The Adrenocortical Response of Greater Sage Grouse (Centrocercus urophasianus) to Capture, ACTH Injection, and Confinement, as Measured in Fecal Samples." Physiological and Biochemical Zoology 82, no. 2 (March 2009): 190–201. http://dx.doi.org/10.1086/596513.

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BELTON, LORIEN R., and DOUGLAS JACKSON-SMITH. "Factors influencing success among collaborative sage-grouse management groups in the western United States." Environmental Conservation 37, no. 3 (September 2010): 250–60. http://dx.doi.org/10.1017/s0376892910000615.

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SUMMARYConsiderable efforts have been put into collaborative conservation efforts across the globe. In the western USA, concern about declines of two sage-grouse species (Centrocercus urophasianus and C. minimus) has led to the creation of over 60 collaborative wildlife management partnership groups to develop and implement local sage-grouse management plans. These sage-grouse local working groups (LWGs) share a common goal, information, and policy environment, but were implemented in diverse ways. As a result, they provide a rare opportunity to study systematically the impact of contextual, organizational, institutional and process factors on local collaborative group success. Data from document reviews and an extensive survey of over 700 group participants from 53 sage-grouse LWGs were used to assess the success of this collaborative conservation effort and identify those group attributes that were related to successful implementation and funding of projects. Specifically, external, internal and emergent group characteristics were considered as likely predictors of LWG implementation success. The LWGs varied broadly in their achievements. The presence of a neutral facilitator, participants' feelings of ownership, groups whose local plans had more authority and early-stage group successes were significantly related to implementation success at the group level.

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Howe, Kristy B., and Peter S. Coates. "Observations of Territorial Breeding Common Ravens Caching Eggs of Greater Sage-Grouse." Journal of Fish and Wildlife Management 6, no. 1 (June 1, 2015): 187–90. http://dx.doi.org/10.3996/042014-jfwm-030.

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AbstractPrevious investigations using continuous video monitoring of greater sage-grouse Centrocercus urophasianus nests have unambiguously identified common ravens Corvus corax as an important egg predator within the western United States. The quantity of greater sage-grouse eggs an individual common raven consumes during the nesting period and the extent to which common ravens actively hunt greater sage-grouse nests are largely unknown. However, some evidence suggests that territorial breeding common ravens, rather than nonbreeding transients, are most likely responsible for nest depredations. We describe greater sage-grouse egg depredation observations obtained opportunistically from three common raven nests located in Idaho and Nevada where depredated greater sage-grouse eggs were found at or in the immediate vicinity of the nest site, including the caching of eggs in nearby rock crevices. We opportunistically monitored these nests by counting and removing depredated eggs and shell fragments from the nest sites during each visit to determine the extent to which the common raven pairs preyed on greater sage-grouse eggs. To our knowledge, our observations represent the first evidence that breeding, territorial pairs of common ravens cache greater sage-grouse eggs and are capable of depredating multiple greater sage-grouse nests.

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Bush, Krista L., Christopher K. Dyte, Brendan J. Moynahan, Cameron L. Aldridge, Heather S. Sauls, Angela M. Battazzo, Brett L. Walker, et al. "Population structure and genetic diversity of greater sage-grouse (Centrocercus urophasianus) in fragmented landscapes at the northern edge of their range." Conservation Genetics 12, no. 2 (November 11, 2010): 527–42. http://dx.doi.org/10.1007/s10592-010-0159-8.

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Yost, Andrew C., Steven L. Petersen, Michael Gregg, and Richard Miller. "Predictive modeling and mapping sage grouse (Centrocercus urophasianus) nesting habitat using Maximum Entropy and a long-term dataset from Southern Oregon." Ecological Informatics 3, no. 6 (December 2008): 375–86. http://dx.doi.org/10.1016/j.ecoinf.2008.08.004.

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Blomberg, Erik J., Peregrine L. Wolff, and James S. Sedinger. "Geographic Variation in Liver Metal Concentrations of Greater Sage-Grouse." Journal of Fish and Wildlife Management 4, no. 2 (October 1, 2013): 298–302. http://dx.doi.org/10.3996/092012-jfwm-083.

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Abstract Populations of greater sage-grouse (Centrocercus urophasianus) have declined throughout the species' range. We evaluated metal concentrations in livers sampled from greater sage-grouse collected from hunters in Eureka County, Nevada, during autumn of 2008 and 2010. We make local comparisons of metal concentrations between two populations of greater sage-grouse in Eureka County, as well as regional comparisons with previously reported values for greater sage-grouse collected in Wyoming and Montana. With one exception, tissue concentrations of lead, arsenic, and mercury were below method detection limits. Mean concentrations of iron, molybdenum, and zinc differed between the two Nevada populations, and magnesium, cadmium, molybdenum, and selenium differed between greater sage-grouse in eastern Nevada, and values reported for Wyoming and Montana. In contrast, we found no evidence for local variation in magnesium, copper, cadmium, or selenium, or for regional variation in iron, zinc, or copper. Of particular interest were low selenium concentrations in our study system relative to Wyoming and Montana. Some individuals in our study returned liver selenium values considered consistent with selenium deficiency in domestic poultry. This research adds to the small body of literature on background contaminant levels in greater sage-grouse, and provides evidence for geographic variation in metal concentrations at local and regional scales.

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Sherfy, Mark H., and Peter J. Pekins. "The influence of season, temperature, and absorptive state on sage grouse metabolism." Canadian Journal of Zoology 72, no. 5 (May 1, 1994): 898–903. http://dx.doi.org/10.1139/z94-122.

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We used indirect respiration calorimetry to measure the metabolism of six adult sage grouse (Centrocercus urophasianus) during winter, spring, and summer. During winter the metabolic rate of fed birds was higher (P < 0.05) than that of fasted birds. The standard metabolic rate (SMR) of females (0.692 mL O2∙g−1∙h−1) was higher than of males (0.583 mL O2∙g−1∙h−1) in winter; in both sexes SMR was higher in winter than in summer. Females' SMR was lower (P = 0.0001) in spring than in winter. Lower critical temperatures of both males and females were substantially lower in winter (−0.6 °C, −4.8 °C) than in summer (14.9 °C, 14.8 °C). Although seasonally elevated, the SMR of sage grouse in winter is low in comparison with that of other galliforms with northern distributions. Thermoregulation during a winter night at −10 °C would result in minimal (<5%) expenditure of endogenous reserves by either sex. Thermoregulation and SMR in winter are more energetically costly to female sage grouse than to males, and may necessitate increased behavioral thermoregulation by females. Seasonal change in SMR differs between the sexes, and is probably influenced by the energetic demands of the breeding season.

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