Welfare of Animals in Backyard Wildlife Feeding

Feeding wild animals in backyards and parks is popular but can have complex welfare consequences for individual animals and populations when done incorrectly.

Key Facts

An estimated 57 million US households feed wild birds annually
Inappropriate food provision (bread to ducks, processed food to squirrels) causes nutritional disease
Supplemental feeding concentrates animals, increasing disease transmission and social stress
Clean, appropriate feeders with species-appropriate food can provide genuine welfare benefits in harsh winters
Dependent wildlife may lose foraging skills or fail to migrate when supplemental feeding is year-round

Welfare Considerations

Wildlife feeding welfare outcomes depend critically on food type and feeder management. Bread causes potentially fatal angel wing deformity in waterfowl. Unsanitary feeders spread deadly avian diseases including salmonellosis and trichomoniasis. High-density feeding concentration facilitates disease transmission in otherwise dispersed wild populations. Done correctly — species-appropriate food, clean feeders, and seasonal rather than year-round provision — supplemental feeding can provide genuine winter welfare benefits.

What You Can Do

Feed birds species-appropriate food: black oil sunflower seed, nyjer, or suet for common species
Clean feeders every 1-2 weeks with hot soapy water to prevent disease transmission
Never feed bread to ducks, geese, or swans — it causes nutritional disease
Stop supplemental feeding in spring and summer when natural food is abundant