Comparative Analysis of Foraging Strategies in Urban and Rural Bird Populations

Thesis Abstract

Urbanization has profoundly altered natural ecosystems, influencing avian foraging behaviors and resource use, yet comprehensive comparative analyses of these strategies in urban and rural bird populations remain limited. This study aims to investigate the differences in foraging strategies between urban and rural bird populations, with specific objectives to identify preferred foraging habitats, resource selection patterns, and behavioral adaptations across different ecological contexts. The research employs a comparative cross-sectional design, focusing on two representative bird species exhibiting broad habitat preferences the house sparrow (Passer domesticus) and the European starling (Sturnus vulgaris). The study population comprises these species within the metropolitan area of Meadowbrook City (urban site) and the adjacent farmland region of Greenfield County (rural site). A total sample of 200 individual birds (100 from each site) was selected through stratified random sampling, ensuring representation across age groups and sexes. Data collection instruments include direct field observations, structured foraging behavior recording using focal sampling methods, and habitat assessment tools to classify resource types and availability. Additionally, GPS telemetry was used on a subset of 50 individuals per site to track foraging range and movement patterns over a four-week period. To capture dietary preferences, bird droppings were collected and analyzed via microhistological techniques. Data reliability and validity were assured through standardized observation protocols and calibration of field personnel. Analytical techniques encompass descriptive statistics for initial habitat use profiles, chi-square tests to compare resource selection frequencies, and multivariate regression analysis to examine the influence of environmental variables on foraging behavior. An ANOVA was conducted to compare foraging range sizes and activity durations between habitats. The ecological theory of optimal foraging was employed as the primary framework, complemented by niche partitioning theory to interpret habitat and resource use variation. Anticipated results include significant differences in foraging habitat preferences, with urban birds exhibiting a higher reliance on anthropogenic food sources and altered foraging ranges, while rural populations demonstrate broader habitat use and different dietary compositions. Behavioral adaptations such as increased temporal flexibility and innovative foraging techniques are expected among urban birds. These findings will contribute to understanding how environmental context influences avian foraging ecology, highlighting behavioral plasticity and habitat-specific resource exploitation strategies. This research advances knowledge by providing empirical evidence of distinct foraging adaptations associated with urbanization, underscoring implications for bird conservation and urban ecosystem management. The study concludes that urban birds exhibit specialized foraging strategies driven by resource scarcity and habitat fragmentation, which may increase their resilience but also their vulnerability to environmental disturbances. Recommendations include integrating habitat diversity preservation in urban planning, implementing conservation strategies tailored to behavioral adaptations, and encouraging further research into the long-term fitness consequences of modified foraging behaviors in changing landscapes. The study underscores the importance of interdisciplinary approaches combining behavioral ecology and urban ecology to address contemporary conservation challenges facing avian populations amidst rapid urban expansion.