Wild Bird Feeding: Benefits, Risks, and Best Practice

Garden bird feeding benefits millions of birds globally but also creates welfare risks from disease, predation, and inappropriate food. Best practice guidance helps maximise welfare benefit.

Key Facts

UK garden bird feeding involves an estimated 600 million pounds spent annually on bird food and feeders
Research shows bird feeding increases winter survival rates and supports population recovery for some species
Trichomonas gallinae disease spreads between birds at dirty feeders, causing fatal throat lesions
Domestic cats kill significant numbers of birds attracted to garden feeders
The RSPB provides detailed guidance on appropriate foods, feeder hygiene, and placement
Bird feeding supplementation reduces the welfare impact of habitat loss for many common garden species

Welfare Considerations

Garden bird feeding, when done correctly, is one of the most direct individual welfare interventions available. Supplementary food during winter food scarcity reduces starvation mortality. However, poorly managed feeding creates welfare harms. Dirty feeders concentrate birds and facilitate Trichomonas transmission — sick birds at feeders infect healthy ones. Inappropriate foods including salted nuts, bread, and desiccated coconut cause nutritional harm and choking. Feeder placement near cover that cats can use creates predation risk. Collisions with windows visible from feeders cause millions of bird deaths annually. Each of these risks is preventable with simple changes to feeding practice.

What You Can Do

Clean bird feeders regularly with dilute disinfectant to prevent Trichomonas and other disease transmission
Use only appropriate foods — quality seed mixes, fat balls without nets, mealworms, and fresh water
Place feeders away from cat ambush cover and apply window film to prevent glass strikes
Record birds visiting your feeders through the RSPB Big Garden Birdwatch citizen science survey