Rapid urbanization in Metro Manila has progressively fragmented the region's green infrastructure, reducing habitat continuity and undermining the ecological processes that sustain urban biodiversity. This study presents a spatial analysis of ecological connectivity across San Juan City and Mandaluyong City, using synanthropic bird species as the focal taxa for movement modeling, selected for their prevalence in built environments, their role as ecological indicator species, and the expectation that solutions designed for avian movement would yield cascading benefits for co-occurring fauna including pollinators and nocturnal species. The analytical framework integrates land cover classification from satellite imagery, morphological spatial pattern analysis to delineate core habitat patches, graph-theoretic connectivity assessment to rank patch importance, and current-flow modeling to simulate probabilistic bird movement across a resistance surface calibrated to urban land cover. Fourteen core habitat patches were identified as structural anchors of the network, with movement density mapping revealing active corridors concentrated along riparian margins and institutional open spaces, alongside pronounced pinch points and low-connectivity dead zones distributed across the built fabric. Road-scale analysis further identified specific street segments traversing active corridors, providing spatially explicit targets for canopy restoration and green infrastructure investment. Future research directions include micro-scale assessment of park and street infrastructure features as habitat enablers, and the integration of visual quality appraisal to align ecological network performance with human perception of urban green space.

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Keywords: urban ecology, green infrastructure, habitat fragmentation, landscape connectivity, geographic information systems, Metro Manila