The Royal Society for the Protection of Birds (RSPB) has issued new guidance urging gardeners to change their habits regarding bird feeder placement. Hanging feeders in common spots, particularly under trees where birds roost, puts birds at risk of catching diseases like trichomonosis.
Trichomonosis Threatens Finches
Trichomonosis is a contagious disease caused by a parasite that targets the bird's upper digestive tract and throat, causing lesions that prevent swallowing. Finches, especially Greenfinches and Chaffinches, are highly vulnerable, and Bullfinches are also experiencing rapid decline due to the disease.
Seasonal Risk and Feeding Advice
Scientific evidence shows that outbreak risk peaks in summer and autumn, as the parasite cannot survive winter cold. During warmer months, the disease thrives when birds gather at feeders, with sick birds regurgitating food and infecting others. The RSPB now recommends against leaving seeds and peanuts in feeders between May 1 and October 31 to protect finches. Instead, gardeners should offer small amounts of mealworms, fatballs, or suet in moderation.
Alternative Feeding Practices
Experts believe that without supplementary feeds, finches will turn to natural food sources in summer, reducing outbreak risk. The RSPB also advises keeping feeders clean and moving them regularly to prevent debris buildup. Placing feeders under trees is discouraged; instead, moving them to less high-risk areas helps avoid contamination through droppings.
Additional Tips
- Clean feeders frequently to remove disease-carrying debris.
- Rotate feeder locations to prevent buildup of contaminated material.
- Provide natural food sources like insects and berries to supplement feeding.
For a full list of tips, visit the RSPB website.
