Garden bird feeding is the UK's most common wildlife activity, with millions of households participating. Understanding how to feed birds well - and how poor feeding can harm rather than help - is important for genuine welfare benefit.
Garden bird feeding welfare involves both the direct benefit of supplemental nutrition and the potential harm from poorly managed feeding stations. Greenfinch populations declined by 60%+ partly due to trichomonosis spread at garden feeders - a welfare disaster partly attributable to poor feeder hygiene. Well-managed feeding with appropriate food and clean equipment provides genuine welfare benefit, particularly during winter cold snaps and the breeding season when natural food is scarce. The key principle is that feeding done well helps; feeding done poorly can cause harm at population scale.