Supplementary feeding of wild birds provides welfare benefits but can cause disease transmission and inappropriate habituation without careful management.
Well-managed bird feeding provides genuine welfare benefit by reducing winter starvation and providing reliable energy during cold snaps. Poorly maintained feeders with rotten or moldy food cause disease outbreaks that kill the birds they aim to help. Species that become dependent on feeders may lose foraging skills. Feeder placement and hygiene are as important as the food provided. Water is critically undervalued in bird welfare support.