Wildlife

Wild Bird Feeder Hygiene and Disease Prevention

Garden bird feeders attract and concentrate wild birds, increasing disease transmission risk that can be significantly reduced through regular cleaning and good practice.

Key Facts

Dirty feeders spread trichomonosis, salmonella, and finch diseases
Greenfinch and chaffinch populations have been severely affected by trichomonosis
Feeders should be cleaned weekly with hot water and a small amount of disinfectant
Rotating feeder positions reduces ground contamination beneath feeders
Sick birds at feeders should prompt immediate feeder removal and cleaning

Welfare Considerations

Bird feeders that are not maintained become disease transmission sites that worsen population welfare beyond the benefit of supplementary food. Trichomonosis has killed millions of greenfinches and chaffinches across the UK over the past two decades. Simple hygiene measures including weekly cleaning, using appropriate foods, and removing sick birds from feeders significantly reduce disease burden.

What You Can Do

Clean garden feeders weekly with hot water and avian disinfectant
Remove feeders immediately if you see sick birds and rest the area for 4 weeks
Use appropriate foods for each season avoiding mouldy or contaminated food
Position feeders to allow escape from cats
Report garden bird deaths to the Garden Wildlife Health project