Wild Bird Winter Feeding and Supplementary Nutrition

Supplementary feeding of garden birds in winter is widespread and can significantly support bird welfare and population persistence, but must be done correctly.

Key Facts

An estimated 50-60% of UK households feed garden birds - the highest rate in the world
Supplementary feeding reduces winter mortality in species like blue tit and great tit by improving energy balance
Inappropriate foods including salty or processed scraps can harm birds through toxicity or nutritional imbalance
Dirty feeders spread avian diseases including Trichomonosis, which has severely impacted greenfinch populations
Winter feeding is most critical during prolonged freezing spells when natural food is inaccessible under snow or ice

Welfare Considerations

Well-managed garden bird feeding provides real welfare benefits by supplementing nutrition during energetically costly winter periods. However, it requires hygiene vigilance - feeders should be cleaned weekly with dilute disinfectant to prevent disease transmission. Water provision is equally important as birds need drinking and bathing access even in freezing conditions. Feeding stations should be positioned safely from cat predation. The risks of disease spread through communal feeders underscore the importance of responsible supplementary feeding practice.

What You Can Do

Feed garden birds species-appropriate food: suet, sunflower seeds, and nyjer for finches
Clean feeders weekly with a dilute bleach solution and allow to dry before refilling
Provide fresh water in a shallow dish or birdbath daily in winter
Position feeders safely above ground and away from cover where cats can ambush
Register with the RSPB Big Garden Birdwatch to contribute to monitoring data