A study leaded by researchers from the Doñana Biological Station (EBD-CSIC) and the Institut de Ciències del Mar (ICM-CSIC) estimated the seeds dispersed and beyond Barcelona based on the movement of gulls monitored by GPS telemetry and seeds detected in their diet.
Modelling shows that around 30% of the seeds (including native plants but also alien species) were dispersed by gulls within green urban areas, concentrated in two main hotspots (Ciutadella Park and Montjuic), with important...

Research focused on evaluating how human food subsidies influence the foraging ecology of scavenger species is scarce but essential for elucidating their role in shaping behavioral patterns, population dynamics, and potential impacts on ecosystems. This study evaluates the potential role of humans in shaping the year?round distribution and habitat use of individuals from a typical scavenger species, the yellow?legged gull (Larus michahellis), breeding at southwestern Spain.

Wildlife that exploit human-made habitats hosts and spreads bacterial pathogens. This shapes the epidemiology of infectious diseases and facilitates pathogen spill-over between wildlife and humans. This is a global problem, yet little is known about the dissemination potential of pathogen-infected animals. How this knowledge gap could be filled at regional scales is shown by combining molecular pathogen diagnosis with GPS tracking of pathogen-infected gulls.