Creating early successional vegetation on working farms can increase northern bobwhite (Colinus virginianus; hereafter, bobwhite) abundance with little reduction in crop production, but specific effects of field border establishment on bobwhite nesting ecology are not well understood. We monitored bobwhite nesting on a 1,740‐ha working farm with 19% of property managed for early successional vegetation in southeastern North Carolina, USA. We monitored 133 radio‐marked bobwhites from 1 April to 30 September in 2014 and 2015. We modelled nest‐site selection by comparing paired nest and random reference sites and modeled effects of habitat covariates on daily nest survival. Forb, shrub, and native warm‐season grass cover were greater at nest sites than reference sites with forb cover the strongest predictor of nest‐site selection. Bobwhite nested at a greater density in areas managed for fallow vegetation (1 nest/3 ha) than in planted warm‐season grasses and forbs (1 nest/5 ha). The daily nest survival rate over 2 years was 0.964 (SE = 0.007), and was not significantly influenced by any modeled covariate. Naïve nest success (nest successes/total nests) was 46.9%. The importance of forbs as nesting cover indicates bobwhite abundance in areas dominated by row‐crop agriculture may be limited by low nest initiation from a lack of herbaceous nesting cover. Hence, the creation of fallow herbaceous vegetation on working farms should be prioritized to increase bobwhite reproduction within agricultural landscapes. Furthermore, planting warm‐season grasses is not necessary because volunteer forbs and grasses provide as good or better nesting cover and can be less costly to establish. © 2020 The Wildlife Society.

中文翻译：

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在工作农场中筑巢北白腹的生态

在工作农场上建立早期演替植被可以增加北部鲍勃·怀特（Colinus virginianus; 此后，bobwhite）丰产而作物产量几乎没有减少，但是尚未充分了解田间边界建立对bobwhite筑巢生态的具体影响。我们在美国北卡罗来纳州东南部的一个1,740公顷的有工作的农场中监测了短尾nest的筑巢，其中19％的资产管理用于早期演替植被。我们在2014年和2015年4月1日至9月30日期间监测了133个放射性标记的bobwhite。巢位的Forb，灌木和本地暖季草覆盖率比参考位高，而Forb覆盖是巢位选择的最强预测指标。与休耕的暖季草和草（1巢/ 5公顷）相比，在休耕植被管理的区域（1巢/ 3公顷），山茱white的筑巢密度更高。2年的每日巢生存率是0.964（SE = 0.007），并且不受任何模型协变量的显着影响。幼稚巢成功率（巢成功率/总巢数）为46.9％。前叉作为筑巢覆盖物的重要性表明，在以行作农业为主的地区，由于缺乏草类筑巢覆盖物，巢巢萌发率低，从而限制了白潮的丰度。因此，应优先考虑在工作农场上创建休憩草本植物，以增加农业景观中的鲍勃繁殖。此外，由于必须使用自愿性的草和草来提供良好或更好的筑巢遮盖物，并且建立起来的成本较低，因此不必种植暖季草。