Garden bird feeding benefits millions of wild birds but requires careful attention to hygiene, food quality, and feeder placement to avoid causing harm.
Well-managed garden feeding genuinely helps birds, particularly during winter when natural food is scarce. However, inadequate hygiene is a significant welfare risk. Feeders accumulate waste food and droppings that become breeding grounds for bacteria and parasites. An outbreak of Trichomonas gallinae killed large numbers of greenfinches across the UK, traced partly to inadequately cleaned garden feeders. Feeder placement also matters: positioning feeders close to windows dramatically increases fatal collisions.