Supplementary feeding of garden birds is practised by millions of UK households, with research revealing both welfare benefits and risks that inform best practice.
Garden bird feeding provides genuine welfare benefits but requires informed practice to avoid causing harm. The winter survival benefits are well-documented: supplementary food enables birds to maintain body condition during cold snaps when natural food is scarce, reducing hypothermia risk. However, poorly managed feeding stations present real hazards. Dirty feeders accumulate bacteria and parasites - trichomonosis, spread through shared water containers, has caused significant mortality in greenfinch and chaffinch populations. Feeders positioned near windows create collision risks, killing an estimated 100 million birds annually across Europe. Foods that are nutritionally inappropriate, including dry bread (low nutrition, swells in gut), salted peanuts (salt toxicity), and loose coconut during breeding season (aspiration risk for chicks) can cause direct harm. Year-round feeding is now encouraged because birds become habituated to supplementary food sources and may be vulnerable during breeding season if feeders are suddenly removed. Responsible feeding - with clean equipment, appropriate food types, and good feeder placement - provides substantial welfare benefits.