Supplementary feeding of wild birds at garden feeders is practiced by millions, with evidence-based welfare benefits alongside underappreciated risks from disease transmission and dependency.
Garden bird feeding creates welfare benefits and risks that depend entirely on hygiene and management practices. Clean, well-maintained feeders with fresh, appropriate food reduce winter starvation risk and provide nutritional support during breeding seasons. Dirty, poorly maintained feeders concentrate birds at disease transmission hotspots that spread Trichomonas, Salmonella, and fungal pathogens, causing deaths that exceed the benefits of supplementary nutrition. The welfare-positive garden feeding program is one where the feeder itself is not a welfare liability: weekly cleaning, appropriate food types for species present, regular food replacement, and feeder positioning that reduces disease spread by minimizing contact between individuals. The millions of people who feed garden birds are a potential constituency for wildlife welfare education — people who clearly care about individual wild animals and can be supported to feed more effectively.