Data from: Balancing conflict and coexistence: Interactions between invasive monk parakeets and native urban birds

Scope: The data was collected across multiple urban parks in Madrid (Spain) between 2021 and 2023. Taxonomically, it captures interactions involving key native species such as the House Sparrow (Passer domesticus), Eurasian Tree Sparrow (Passer montanus), Rock Pigeon (Columba livia), Stock Dove (Columba oenas), Eurasian Magpie (Pica pica), and Eurasian Blackbird (Turdus merula). The dataset comprehensively covers three main ecological axes: 1) interference competition at experimental foraging sites (quantifying agonistic and intimidation events), 2) spatial avoidance (measuring native bird Kilometric Abundance Index along a parakeet density gradient), and 3) nesting facilitation (recording the breeding use of parakeet nest structures by native species).