Northern Bobwhite Home Range Sizes and Movements in South Texas

Miller, Katherine S.; Hernández, Fidel; Brennan, Leonard A.; DeYoung, Randy W.; Wu, Xiaowen

doi:10.7290/nqsp08gogy

Cited by 6 publications

(4 citation statements)

References 24 publications

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“…Individuals sourced from northwest Texas had larger home ranges than individuals from south Texas, which is similar to prior research (Haines et al 2004, Buckley et al 2015, Miller et al 2017). Differences we documented in home range between source populations may be a product of fundamental characteristics of the subspecies.…”

Section: Discussionsupporting

confidence: 88%

“…While both source regions are in semi‐arid environments, we predicted that bobwhites sourced from northwest Texas would survive and reproduce at greater rates than individuals translocated from south Texas given their historical occurrence in the region. Additionally, bobwhites from northwest Texas tend to have larger home ranges than those from south Texas (Haines et al 2004, Buckley et al 2015, Miller et al 2017), and we predicted that translocated birds from northwest Texas would maintain larger home ranges. We predicted that individuals from south Texas would initiate nests earlier and later in the nesting season because of climatic variation between south Texas and northwest Texas (Lehmann 1946, 1984).…”

mentioning

confidence: 85%

“…Additionally, bobwhites from northwest Texas tend to have larger home ranges than those from south Texas (Haines et al 2004, Buckley et al 2015, Miller et al 2017), and we predicted that translocated birds from northwest Texas would maintain larger home ranges. We predicted that individuals from south Texas would initiate nests earlier and later in the nesting season because of climatic variation between south Texas and northwest Texas (Lehmann 1946(Lehmann , 1984.…”

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confidence: 96%

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Northern bobwhite subspecies exhibit reduced survival and reproduction when translocated outside their native range

et al. 2023

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The popularity of translocation as a conservation tool to reintroduce and re-stock existing populations of northern bobwhite (Colinus virginianus) to restored habitat has increased following decades-long decline; however, population sources are limited to a few areas in the United States where stable or increasing populations remain. Understanding how demographic parameters of translocated individuals vary by source region and subspecies will help increase the effectiveness of translocation as a recovery tool. Our objectives were to compare survival, movements, and reproduction of 2 translocated subspecies of bobwhite. We translocated 665 bobwhites (n = 253 northwest Texas [C. v. taylori]; n = 412 south Texas [C. v. texanus]) to an 890-ha site in northcentral Texas, USA, during March 2019-2021 and radio-marked 380 (n = 184 northwest Texas; n = 196 south Texas). The northwest subspecies is considered the subspecies native to the release site. Radio-marked bobwhites from south Texas were 1.25 times (95% CI = 0.98-1.60) more likely to die on the study site than individuals from northwest Texas. Home ranges (95% kernel density estimator) were larger for bobwhites sourced from northwest Texas (51 ha, 95% CI = 39-63 ha) compared to individuals from south Texas (32 ha, 95% CI = 22-42 ha).Individuals from northwest Texas were 1.5 times (95% CI = 1.10-1.80) more likely to leave the study site but 3.2 times (95% CI = 2.32-4.19) more likely to return to the study site after dispersing. Radio-marked bobwhites from

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Section: Discussionsupporting

confidence: 88%

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confidence: 85%

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confidence: 96%

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Northern bobwhite subspecies exhibit reduced survival and reproduction when translocated outside their native range

et al. 2023

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“…Because bobwhite have high mortality rates (Sisson et al, 2009), landowners finance supplemental feeding and predator management on their properties. Supplemental feeding reduces the home range size for bobwhite as well as the time bobwhite spend foraging and the distance they travel to feed, thereby reducing mortality risks (Miller et al, 2017; Sisson et al, 2009; Wellendorf et al, 2017). Controlling meso‐mammal predators (e.g., armadillos, opossums, racoons) has been shown to improve bobwhite recruitment (Jackson et al, 2018; Palmer et al, 2019; Yeiser et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

A cost assessment of intensive wild quail management on private lands in the southeastern United States

Nimlos,

Martin,

Palmer

et al. 2023

Conservat Sci and Prac

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Private landowners who operate multifunctional landscapes play a critical role in the conservation of native and imperiled species, and the restoration of native ecosystems. In the southeastern United States, both northern bobwhite (Colinus virginianus) and pine savanna ecosystems are imperiled and heavily reliant on conservation efforts by private landowners. Engaging private landowners in the restoration and management of pine savannas and grasslands is essential to the recovery of northern bobwhite, which is also managed as a game species. Since the early 1900s, the cultural tradition of wild bobwhite hunting has motivated landowners to manage their properties to increase bobwhite populations. However, the costs and revenues associated with intensive wild bobwhite management and hunting are imperfectly understood. From May 2021 to February 2022, we conducted semistructured interviews with landowners and land managers of 37 wild bobwhite hunting properties (total of 65,317 ha in bobwhite management) in Alabama, Georgia, Florida, and South Carolina to enumerate the costs and revenues associated with intensive wild bobwhite management. Landowners spent an average of $154/acre/year

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Quail and rain in semiarid rangelands: Does management matter?

et al. 2022

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Rainfall is a strong driver of quail populations on southwestern rangelands and can account for a large portion (~70–95%) of the variability in regional quail production and abundance. Landowners have attempted to moderate these boom‐and‐bust fluctuations via management; however, presently it is unknown whether management can increase or stabilize quail populations in semiarid environments or whether rainfall remains as influential at small spatial extents. Our objectives were to evaluate the efficacy of management at mitigating the effects of rainfall on northern bobwhite (Colinus virginianus) populations on semiarid rangelands and to quantify the influence of rainfall on bobwhite density at smaller spatial extents. We conducted a study to evaluate these objectives during 2014–2020 in the Rio Grande Plains (n = 11 sites; 1,100‒6,500 ha) and Rolling Plains (n = 4 sites; 1,900‒4,000 ha) of Texas, USA. We estimated bobwhite density during late autumn (Dec‒Jan) on all sites using helicopter surveys within a distance‐sampling framework. We also obtained site‐level seasonal rainfall (Apr‒Aug) and quantified management intensity via landowner surveys and a scoring rubric to categorize sites into 3 classes (low, medium, and high management intensity). Bobwhite populations during this study experienced a boom‐bust cycle in both the Rio Grande Plains and Rolling Plains, with mean bobwhite density fluctuating considerably (0.57‒2.96 bobwhites/ha and 0.02‒2.88 bobwhites/ha, respectively). In the Rio Grande Plains, mean bobwhite density significantly increased from low to high management intensity in 2015 (1.12 ± 0.17 bobwhites/ha vs. 2.87 ± 0.39 bobwhites/ha, respectively), 2016 (1.06 ± 0.20 bobwhites/ha vs. 2.96 ± 0.36 bobwhites/ha, respectively), 2017 (0.73 ± 0.16 bobwhites/ha vs. 1.91 ± 0.32 bobwhites/ha, respectively), and 2019 (0.42 ± 0.14 bobwhites/ha vs. 1.01 ± 0.26 bobwhites/ha, respectively; P < 0.05). In addition, rainfall at the site level accounted for a low amount of the variation in bobwhite density (r2 = 0.09; P < 0.01). Similarly, in the Rolling Plains, mean bobwhite density significantly increased from low to high management intensity in 2015 (1.30 ± 0.27 bobwhites/ha vs. 2.20 ± 0.29 bobwhites/ha, respectively) and 2016 (1.26 ± 0.26 bobwhites/ha vs. 2.88 ± 0.34 bobwhites/ha, respectively; P < 0.05). Rainfall at the site level also accounted for a low amount of the variation in bobwhite density (r2 < 0.02; P = 0.82). Our findings suggest that management can increase bobwhite density beyond that of less‐managed properties but does not completely eliminate inter‐annual fluctuations in semiarid environments. In addition, rainfall appears to exert less of an influence on bobwhite density at a site level (e.g., 2,000 ha) than has been documented at a regional level (e.g., ≥8 million ha).

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Northern Bobwhite Home Range Sizes and Movements in South Texas

Cited by 6 publications

References 24 publications

Northern bobwhite subspecies exhibit reduced survival and reproduction when translocated outside their native range

Northern bobwhite subspecies exhibit reduced survival and reproduction when translocated outside their native range

A cost assessment of intensive wild quail management on private lands in the southeastern United States

Quail and rain in semiarid rangelands: Does management matter?

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