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- Colinus virginianus (9)
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- Call-back surveys (1)
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- Colinus nigrogularis (1)
- Colinus virginianus ridgwayi (1)
Articles 1 - 19 of 19
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A Presence-Absence Survey To Monitor Montezuma Quail In Western Texas, Cristela Gonzalez Sanders, Fidel Hernández, Leonard A. Brennan, Andrew N. Tri, Robert Perez
A Presence-Absence Survey To Monitor Montezuma Quail In Western Texas, Cristela Gonzalez Sanders, Fidel Hernández, Leonard A. Brennan, Andrew N. Tri, Robert Perez
National Quail Symposium Proceedings
Developing an effective monitoring program for Montezuma quail (Cyrtonyx montezumae) is challenging because the technique must be practical for surveying vast, remote landscapes while accounting for the species’ low detectability. We used call-back surveys within a presence–absence framework to estimate occupancy and detection probability of Montezuma quail and used this information in conjunction with habitat data to develop an estimated probability of occurrence map for the species. We established survey points at 4 sites in western Texas (n = 20–30 points/site) and conducted 5 repeat surveys/season during June–August 2007 and 2008. We documented abiotic conditions (temperature, time …
Do Movement Patterns And Habitat Use Differ Between Optimal- And Suboptimal-Sized Northern Bobwhite Coveys?, Christopher K. Williams, Roger Applegate, Anthony R. Ives
Do Movement Patterns And Habitat Use Differ Between Optimal- And Suboptimal-Sized Northern Bobwhite Coveys?, Christopher K. Williams, Roger Applegate, Anthony R. Ives
National Quail Symposium Proceedings
The group size of social animals and spatial structure of the environment can affect group behavior and movement decisions. Our objective was to investigate movement patterns and habitat use of northern bobwhite coveys (Colinus virginianus) of different size. Using radiotelemetry, we continuously monitored covey group size, daily movement, and habitat use on 12 independent 259-ha study areas in eastern Kansas, USA, during the winters between 1997 and 2000. We used correlated random walk models and fractal dimension models to determine if covey size affected movement characteristics or habitat selection. Intermediate-sized coveys (9–12 individuals, close to optimal covey size) …
An Analysis Of Masked Bobwhite Collection Locales And Habitat Characteristics, David E. Brown, Kevin B. Clark, Randall D. Babb, Grant Harris
An Analysis Of Masked Bobwhite Collection Locales And Habitat Characteristics, David E. Brown, Kevin B. Clark, Randall D. Babb, Grant Harris
National Quail Symposium Proceedings
We evaluated the collecting locales of 251 masked bobwhite (Colinus virginianus ridgwayi) specimens in museum collections. Eighteen were from 4 sites in Arizona—all collected by Herbert Brown. The vast majority (93%) of specimens were from the Mexican State of Sonora. We visited and photographed each of the Arizona collection locations and most of the sites in Sonora. Collector descriptions indicate the bird’s principal habitat affiliations were with tall grass-weed (1⁄4 forb) pastures, savannas, and farm fields. All historic localities visited were either in grass-forb habitats along drainages or in present or former savannas adjacent to woody cover and/or agricultural fields …
Annual Variation In Northern Bobwhite Survival And Raptor Migration, R. Douglas Holt, L. Wes Burger Jr., Bruce D. Leopold, K. David Godwin
Annual Variation In Northern Bobwhite Survival And Raptor Migration, R. Douglas Holt, L. Wes Burger Jr., Bruce D. Leopold, K. David Godwin
National Quail Symposium Proceedings
We estimated survival of radio-marked northern bobwhite (Colinus virginianus) on a managed prairie site in northeast Mississippi during 2 disparate winters (15 Sep-14 Apr 2000–2002). We retrospectively examined factors that may influence bobwhite survival. Pooled survival rates differed substantially between years (S 1⁄4 0.03 6 0.02 in 2000–2001 and S 1⁄4 0.36 6 0.16 in 2001–2002). Regional relative abundance of 3 species of raptors thought to be important predators of bobwhite was greater during 2000 compared to 2001 based on kriging of Christmas Bird Count (CBC) data. We demonstrate an approach for characterizing annual variation in spatial distribution of migratory …
A Mid-Atlantic And A National Population Model Of Northern Bobwhite Demographic Sensitivity, Christopher K. Williams, Brett K. Sandercock, Michael Lohr, Paul M. Castelli
A Mid-Atlantic And A National Population Model Of Northern Bobwhite Demographic Sensitivity, Christopher K. Williams, Brett K. Sandercock, Michael Lohr, Paul M. Castelli
National Quail Symposium Proceedings
Numerous field studies have estimated fecundity and survival rates for northern bobwhites (Colinus virginianus), but a synthetic population model based on life-stage simulation analysis (LSA) was only recently developed to examine demographic sensitivity of the finite rate of population change. We compare local demographic parameters of bobwhite versus a national compilation to identify limiting demographic factors for improved regional habitat planning and management. The national compilation provided a useful overview but combined parameters across populations at different latitudes and under different management regimes. We parameterized our LSA model to examine the sensitivity of the finite rate of growth (k) to …
One Hundred Years Of Quail Management In Arizona, David E. Brown
One Hundred Years Of Quail Management In Arizona, David E. Brown
National Quail Symposium Proceedings
Populations of Gambel’s (Callipepla gambelii), scaled (C. squamata), and Montezuma (Cyrtornyx montezumae) quail in Arizona have fluctuated greatly in the 100 years since statehood as have regulations governing their take. The greatest fluctuations in numbers have been annual, but there is some evidence for a long-term decline in the numbers of all species. Quail hunt success has declined significantly since 1962 according to both check station information (r2 1⁄4 0.27; P,0.0001) and hunt questionnaire data (r2 1⁄4 0.35; P,0.001). Past attempts to improve or stabilize quail populations through bag limit and season adjustments have failed to impact quail numbers. Research …
Total Body Electrical Conductivity For Determining Carcass Fat In Ruffed Grouse, Aaron B. Proctor, John W. Edwards
Total Body Electrical Conductivity For Determining Carcass Fat In Ruffed Grouse, Aaron B. Proctor, John W. Edwards
National Quail Symposium Proceedings
Percent carcass fat is often considered a primary condition indice in game bird species. Although regarded as the standard for determining fat reserves, traditional sampling methods require sacrificing animals for chemical analysis via fat extraction. Lethal methods negate the ability to track condition of individuals through time. Avian physiology studies often require the assessment of conditional changes through time and among various treatments, which necessitate the use of a non-lethal method for estimating fat levels. We were able to accurately estimate fat condition in captive ruffed grouse (Bonasa umbellus) utilizing total body electrical conductivity (TOBEC). We developed predictive models to …
Necklace-Type Transmitter Attachment Method For Ruffed Grouse Chicks, Christopher A. Dobony, Brian W. Smith, John W. Edwards, Thomas J. Allen
Necklace-Type Transmitter Attachment Method For Ruffed Grouse Chicks, Christopher A. Dobony, Brian W. Smith, John W. Edwards, Thomas J. Allen
National Quail Symposium Proceedings
Although methodologies to obtain cause-specific mortality and survival information for adult ruffed grouse (Bonasa umbellus) are well documented, procedures for determining similar parameters are lacking for grouse chicks. Mortality among grouse chicks is believed highest during the first few weeks posthatch. During 1999-2002, we equipped ruffed grouse chicks (n = 97) from 33 separate broods, ≤ 4-days-old with radio transmitters to assess the efficacy of transmitters and to examine survival/mortality. Further, we observed that grouse chicks retained transmitters (100%) until recapture or mortality. Handling time was limited because transmitter attachment took only a few minutes per brood. We observed mortality …
Over-Winter Survival Of Northern Bobwhite In Relation To Landscape Composition And Structure, R. Douglass Holt, Loren W. Burger Jr., Bruce D. Leopold, Dave Godwin
Over-Winter Survival Of Northern Bobwhite In Relation To Landscape Composition And Structure, R. Douglass Holt, Loren W. Burger Jr., Bruce D. Leopold, Dave Godwin
National Quail Symposium Proceedings
The conceptualization of security of bobwhite during winter has been predicated on the assumption that winter ranges differ in quality, based on habitat structure, composition, or interspersion. Although some studies have qualitatively related habitat composition to survival, no studies have quantitatively linked habitat or landscape characteristics to winter survival and the specific structural or compositional characteristics that influence quality are unknown. To quantify winter habitat quality, we modeled hazards as a function of habitat characteristics in relation to winter survival of radio-marked bobwhite (2000, n = 118 in 16 coveys; 2001, n = 49 in 7 coveys) in a managed …
Managing Black-Throated Bobwhite For Sustainability In Belize: Preliminary Results Of A Population Study, Jack Eitniear, Reynold Cal, Wilbur Martinez, Omar Fiqueroa, John Baccus
Managing Black-Throated Bobwhite For Sustainability In Belize: Preliminary Results Of A Population Study, Jack Eitniear, Reynold Cal, Wilbur Martinez, Omar Fiqueroa, John Baccus
National Quail Symposium Proceedings
The Black-throated Bobwhite (Colinus nigrogularis), a close relative of the Northern Bobwhite (C. virginianus), has a distinctive black throat and eye-stripes with both bounded by white. Black-throated Bobwhites occur in three distinct geographically isolated populations. Currently no limits or seasons are in place and a hunting license is the only requirement for harvesting this species in Belize. Little is known about Black-throated Bobwhite populations in Belize and data on the impact of hunting on this species is lacking. Because of its restricted distribution, it was recommended that Black-throated Bobwhites should be removed from the list of legally hunted species pending …
Brood Season Habitat Selection By Montezuma Quail In Southeastern Arizona, Kirby D. Bristow, Richard A. Ockenfels
Brood Season Habitat Selection By Montezuma Quail In Southeastern Arizona, Kirby D. Bristow, Richard A. Ockenfels
National Quail Symposium Proceedings
Habitat conditions during brood season can affect Montezuma quail (Cyrtonyx montezumae) population levels in Arizona, and land use practices can affect these habitat conditions. General habitat affinities of Montezuma quail are known, however, information on specific habitat selection patterns is limited. We investigated seasonal habitat selection by Montezuma quail in the foothills of the Huachuca and Santa Rita mountains in southeastern Arizona. We used pointing dogs to locate quail during brood seasons (Aug–Oct) of 1998 and 1999. We measured habitat components at 60 flush sites and 60 associated (100 m) random plots. Compared to random plots, quail used areas with …
Bobcat Predation On Quail, Birds, And Mesomammals, Michael E. Tewes, Jennifer M. Mock, John H. Young
Bobcat Predation On Quail, Birds, And Mesomammals, Michael E. Tewes, Jennifer M. Mock, John H. Young
National Quail Symposium Proceedings
We reviewed 54 scientific articles about bobcat (Lynx rufus) food habits to determine the occurrence of quail, birds, and mesopredators including red (Vulpes vulpes) and gray fox (Urocyon cinereoargenteus), raccoon (Procyon lotor), skunk (Mephitis spp.), and opossum (Didelphis virginianus). Quail (Colinus virginianus, Cyrtonyx montezumae, Callipepla squamata, C. gambelii, C. californica, Oreortyx pictus) were found in 9 diet studies and constituted 3% of the bobcat diet in only 2 of 54 studies. Birds occurred in 47 studies, but were also a minor dietary component in most studies. Although mesopredators were represented as bobcat prey in 33 of 47 studies, their percent …
Macrohabitat Composition Surrounding Successful And Depredated Northern Bobwhite Nests, Eric L. Staller, William E. Palmer, John P. Carroll
Macrohabitat Composition Surrounding Successful And Depredated Northern Bobwhite Nests, Eric L. Staller, William E. Palmer, John P. Carroll
National Quail Symposium Proceedings
Relationships among macrohabitat and depredation of northern bobwhite (Colinus virginianus) nests are poorly understood. Yet, macrohabitat composition may influence the nest predator community and, therefore, the vulnerability of northern bobwhite nests to depredation. We determined if macrohabitat composition surrounding bobwhite nests influenced nest placement, nest success, and which predators were responsible for depredating nests. We characterized macrohabitats at 2 scales, 8 and 16 ha, by surrounding both bobwhite nests, and an equal number of random locations, with a circular buffer. Random points were placed within the area used by bobwhites on our study area. We then determined the acreage of …
Arizona Quail: Species In Jeopardy?, Ron Engel-Wilson, William P. Kuvlesky Jr.
Arizona Quail: Species In Jeopardy?, Ron Engel-Wilson, William P. Kuvlesky Jr.
National Quail Symposium Proceedings
We begin the 21st century with the Midwestern northern bobwhite (Colinus virginianus) range reduced to a small portion of its historic distribution. This precipitous decline occurred largely during the last quarter of the 20th century, coincident with widespread intensive agricultural land use, unchecked natural plant succession, and frequent severe weather. Various bobwhite enthusiasts of the 1960s–1980s era including Klimstra, Dumke and Stanford had evaluated agricultural land use trends and predicted the near demise of bobwhites that we now lament. Alarmed upland bird hunters have repeatedly spurred policy makers and administrators into action. However, because bobwhites still are only an incidental …
Montezuma Quail Management In Arizona, James R. Heffelfinger, Ronald J. Olding
Montezuma Quail Management In Arizona, James R. Heffelfinger, Ronald J. Olding
National Quail Symposium Proceedings
The Montezuma quail (Cyrtonyx montezumae meamsi) has substantially different habitat requirements than other quails found in the U.S. They inhabit evergreen oak woodlands of mountain ranges in the Southwest and feed primarily on underground bulbs and tubers. Populations respond to summer precipitation because the vegetation which provides food and cover for Montezuma quail flourishes after the summer rains. Moderate to heavy grazing increases availability of Montezuma quail food plants, but resultant lack of cover precludes use of such sites. Montezuma quail avoid areas with greater than 50% forage utilization by ungulates. As with other Arizona quail species, hunting has been …
Survival Rates For Northern Bobwhites On Two Areas With Different Levels Of Harvest, Willie J. Suchy, Ronald J. Munkel
Survival Rates For Northern Bobwhites On Two Areas With Different Levels Of Harvest, Willie J. Suchy, Ronald J. Munkel
National Quail Symposium Proceedings
We estimated survival rates for radio-marked northern bobwhites ( Colinus virginianus) in south-central Iowa from I 984 to I 988. Survival rates and survival functions were calculated for 2 areas that received different and varied amounts of hunting pressure. Survival from fall-spring averaged 17.1 % ± 6.9% on the Brown's Slough study area (BSSA) and 20.1 % ± 5.7% on the Millerton study area (MSA). Although these estimates were not different (P = 0.898), the survival functions did differ between the 2 areas (x2 = 25.82, P<0.001). Mortality due to hunting averaged 27.7% ± 8.2% on the BSSA during the fall-spring period and 12.3% ± 4.9% on the MSA. Predators accounted for 52% of fall-spring mortality on the BSSA and 79% of the mortality on the MSA. The BSSA had much lower rates of predation the 2 months following the hunting season. Survival rates during both the spring-fall period and annually did not differ between the 2 areas (P = 0.395 and P = 0.979). Hunting did not appear to be a limiting factor for quail numbers on these areas during the study.
Survival Of Northern Bobwhite On Hunted And Nonhunted Study Areas In The North Carolina Sandhills, Charles F. Robinette, Phillip D. Doerr
Survival Of Northern Bobwhite On Hunted And Nonhunted Study Areas In The North Carolina Sandhills, Charles F. Robinette, Phillip D. Doerr
National Quail Symposium Proceedings
Radio-tagged northern bobwhite (Colinus virginianus) were monitored in the Sandhills region of North Carolina to investigate the influences of hunting on seasonal survival. We used the Kaplan-Meier product limit method with staggered entry design to calculate survival estimates and distributions for 79 radio-tagged bobwhite representing 33 coveys during November-February 1987-89. Estimated winter survival rates for year 1 (59%) and for pooled years (67%) in the nonhunted study areas were greater than in the hunted areas (31 and 45%, respectively; P < 0.05). Survival trends for the second winter were again greater in the nonhunted study areas (7 4%) but not different than hunted study areas (63%; P > 0.05). Avian predation was the major proximate cause of mortality, accounting for 66% of the known losses. Summer whistle count …
Potential Polygamous Breeding Behavior In Northern Bobwhite, Paul D. Curtis, Brad S. Mueller, Phillip D. Doerr, Charles F. Robinette, Theodore Devos
Potential Polygamous Breeding Behavior In Northern Bobwhite, Paul D. Curtis, Brad S. Mueller, Phillip D. Doerr, Charles F. Robinette, Theodore Devos
National Quail Symposium Proceedings
Breeding behavior ofradio-tagged northern bobwhite (Colinus uirginianus) was observed at Fort Bragg Military Reservation (n = 19), North Carolina, in 1985-88, and Tall Timbers Research Station (n = 27), Florida, during 1984-86. We observed apparent polygamous breeding behavior in 95% (18 of 19) of the radio-tagged northern bobwhite at Fort Bragg, and 93% (25 of 27) of the birds at Tall Timbers. We documented 5 cases of double-clutching by radio-tagged females. Twenty-seven percent of Fort Bragg clutches (n = 30), and 20% of Tall Timbers clutches (n = 56) were incubated by radio-tagged males. Northern bobwhite exhibited characteristics of both …
The Interspersian Index As A Technique For Evaluation Of Bobwhite Quail Habitat, William L. Baxter, Carl W. Wolfe
The Interspersian Index As A Technique For Evaluation Of Bobwhite Quail Habitat, William L. Baxter, Carl W. Wolfe
National Quail Symposium Proceedings
An index based on the interspersion of vegetative types proved useful in evaluating quail habitat. Application of the technique for related studies indicated that interspersion indices may find wider application for assessing habitat deficiencies, for evaluating land areas for production of a diversity of wildlife species, and for planning.