Habitat Management Related to Bobwhite Populations at Remington Farms

Burger, George V.; Linduska, J. P.

doi:10.2307/3798353

Cited by 13 publications

(4 citation statements)

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“…Generally, but not always, summer coverts consist of woody cover (present at 96% of coverts used by bobwhites versus 54% of random sites in the Texas Panhandle; Hiller 2004; Table 1) and coverts are taller than vegetation at random sites (x -= 2.8 m and 0.8 m, respectively; Johnson and Guthery 1988; Table 2). If woody cover of the proper structure is deficient on a management area, its availability can be increased by construction of artificial coverts (Guthery 2000:20), planting (Burger and Linduska 1967), transplanting, or protecting areas during prescribed burning such that woody cover will develop on protected sites. If habitat management entails reduction of woody cover, then suitable mid-day coverts should be preserved throughout a management area.…”

Section: Management Implicationsmentioning

confidence: 99%

Microclimate Versus Predation Risk in Roost and Covert Selection by Bobwhites

Hiller

Guthery

2005

Journal of Wildlife Management

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Knowledge of factors that influence habitat selection by wildlife leads to better understanding of habitat ecology and management. Therefore, we compared microclimate and predation risk as factors influencing the selection of stopping points (mid-day coverts, nocturnal roosts) by northern bobwhites (Colinus virginianus). Stopping points were located using radiomarked bobwhites in the Texas Panhandle, USA, during 2002USA, during -2003. We obtained blackbody temperatures of microclimates and assessed predation risk (angles of obstruction for aerial predators, vegetation profiles for terrestrial predators) at stopping points and paired random points. Summer coverts showed fewer degree-minutes of hyperthermic exposure (blackbody temperatures >39°C; x -= 655.0, SE = 4.1 for coverts, x -= 2,255.5, SE = 4.9 for random; 1200-1600 hr) and a lower risk to predators (e.g., 95% confidence intervals [CIs] of angles of obstruction = 87.8-90.8°for coverts, 55.9-70.6°for random). Summer roost temperatures were similar to paired random sites (x -= 13.9°C, SE = 0.6 for roost, x -= 13.9°C, SE = 0.7 for random) as were winter roost temperatures (x -= -1.3°C, SE = 0.7 for roosts, x -= -1.4°C, SE = 0.8 for random). There were minor issues of habitat selection of winter or summer roosts based on predation risk (e.g., 95% CIs of vegetation profiles of summer roosts and random sites did not overlap at lower strata). We concluded other selection factors likely exist for winter roosts because microclimate and predation risk assessments between winter roosts and random sites showed no difference. Similarly, other selection factors may exist for summer roosts, as they showed only a weak difference in terrestrial predation risk and no difference in microclimate in comparison to random sites. We concluded microclimate was the primary selection factor for coverts because prevention of hyperthermia necessitated that bobwhites select cooler microclimates within the study area. 69(1):140-149; 2005 JOURNAL OF WILDLIFE MANAGEMENT

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Section: Management Implicationsmentioning

confidence: 99%

Microclimate Versus Predation Risk in Roost and Covert Selection by Bobwhites

Hiller

Guthery

2005

Journal of Wildlife Management

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“…The effects of supplemental feeding on populations of northern bobwhites (hereafter, bobwhite) have been the subject of many previous studies (Frye 1954;Keeler 1959;Robel et al 1974;Doerr and Silvy 1987;DeMaso et al 1998DeMaso et al , 2002Townsend et al 1999). Burger and Linduska (1967), Ellis et al (1969), and Guthery (1997) noted that supplemental feeding and food plots have not produced a positive population response for bobwhites. However, Lehmann (1984:16, 276) suggested that bobwhites benefited from feeding in south Texas, USA, and Guthery (1986:48-59) suggested that supplemental feeding could benefit bobwhite reproduction and survival if habitat structure was of sufficient quality and the feeding program was handled correctly.…”

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confidence: 99%

Effects of Supplemental Feeding on Physiological Condition of Northern Bobwhite in South Texas

Doerr

Silvy

2006

Journal of Wildlife Management

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“…A general pattern is that bobwhite response to management appears to be more consistent in the mesic portion of the species' distribution (eastern USA) than in the more xeric, western portion (southwestern USA). For example, in the northeastern United States, Burger and Linduska (1967) reported that the number of bobwhite coveys increased from 5 to 38 in response to management over a 9-year period on a 1,214-ha farm in Maryland, USA. In the Midwest, Ellis et al (1969) reported that bobwhite density increased from 0.99 bobwhites/ha to 2.37 bobwhites/ha during a 6-year period in response to management on a 100-ha area in Illinois, USA.…”

Section: Discussionmentioning

confidence: 99%

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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Habitat Management Related to Bobwhite Populations at Remington Farms

Cited by 13 publications

References 4 publications

Microclimate Versus Predation Risk in Roost and Covert Selection by Bobwhites

Microclimate Versus Predation Risk in Roost and Covert Selection by Bobwhites

Effects of Supplemental Feeding on Physiological Condition of Northern Bobwhite in South Texas

Quail and rain in semiarid rangelands: Does management matter?

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