Ecological Dynamics of Northern Bobwhite Populations

The ecological dynamics of northern bobwhite populations are shaped by a complex interplay of habitat structure, climatic variability, predation pressure and human land-use practices. These ground-nesting galliforms exhibit fine-scale selection for microhabitats that offer thermal heterogeneity, enabling behavioural thermoregulation during brood rearing and nesting. Spatial distribution and abundance fluctuate in response to extreme weather events, with thermal stress constraining available space and survival in both winter and summer seasons. Density-dependent processes modulate population responses to habitat interventions, while landscape-scale conservation programmes influence demographic trajectories. Recent advances in remote sensing and modelling have improved the precision of abundance estimates and predicted responses to hunting pressure, guiding adaptive management. The global significance of these findings lies in the bobwhite’s role as an indicator for other grassland-obligate species and in informing conservation strategies under climate change scenarios.

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Ecological Dynamics of Northern Bobwhite Populations publication trend

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Technical terms

Microclimate: Localised atmospheric conditions that differ from the broader regional climate, often influenced by vegetation structure and topography.

Thermal refugia: Microhabitats offering moderated temperatures, allowing individuals to avoid thermal extremes through behavioural thermoregulation.

Density dependence: Regulation of population growth whereby demographic rates change as a function of population density.

Conservation reserve programmes: Voluntary land-use schemes that set aside agricultural acreage for habitat restoration, enhancing landscape connectivity.

Brood rearing: The phase in which precocial chicks and attending adults select microhabitats for feeding and thermoregulation.

References

1. Evaluating the Use of a Thermal Sensor to Detect Small Ground-Nesting Birds in Semi-Arid Environments during Winter. Drones (2024).
2. Extreme climatic events constrain space use and survival of a ground‐nesting bird. Global Change Biology (2016).
3. A Ground-Nesting Galliform’s Response to Thermal Heterogeneity: Implications for Ground-Dwelling Birds. PLOS ONE (2015).
4. Private land conservation has landscape‐scale benefits for wildlife in agroecosystems. Journal of Applied Ecology (2018).
5. Estimating harvest rate and the effects of hunting pressure on northern bobwhite survival. Wildlife Biology (2020).