Wildlife

Wild Bird Supplementary Feeding Science

Scientific evidence on garden bird feeding is increasingly informing best practice guidance. Evidence-based feeding supports bird welfare while minimizing harm risks.

Key Facts

Sunflower hearts are the most nutritionally appropriate and universally accepted wild bird food
Peanuts provide high energy but should be mesh-covered to prevent nestling choking
Mealworms are high-protein but should be limited due to addiction-like preference formation
Feeding year-round is now recommended by BTO as birds use feeders during breeding season too
Feeder hygiene is the single most important welfare-protective feeding behavior

Welfare Considerations

Wild bird feeding science has moved from 'any food is helpful' to 'specific foods at appropriate quality, in clean feeders, in appropriate locations maximize welfare benefit.' Evidence-based feeding that prioritizes appropriate foods in clean feeders in safe locations produces substantially better welfare outcomes than well-intentioned but uninformed feeding that may cause harm.

What You Can Do

Prioritize sunflower hearts and nyjer seeds as evidence-based core wild bird foods
Clean feeders with hot soapy water weekly to prevent disease transmission
Provide fresh clean water alongside food - drinking and bathing are essential year-round
Position feeders away from windows and in areas cats cannot easily access