Supplemental winter feeding of wild birds is a beloved practice globally, but its welfare implications are more complex than widespread enthusiasm suggests.
Wild bird feeding provides genuine welfare benefits when done correctly — reducing winter food stress for some species during energy-critical cold spells. However, poorly maintained feeders create disease transmission hotspots that kill the birds they attract. Spoiled food causes illness. Feeders placed near windows cause collision deaths. Cat predation at ground-feeding stations is significant. Correct practice involves cleaning feeders weekly with disinfectant solution, providing appropriate food for local species, placing feeders away from windows and cat ambush points, and pausing feeding during disease outbreaks in local bird populations.