
Image: BBC Science
RSPB urges bird lovers to stop feeding garden birds during warmer months to combat disease spread, particularly trichomonosis affecting greenfinches.
GlipzoThe RSPB highlights a critical issue: bird feeders can become disease hotspots, particularly for a parasitic infection known as trichomonosis. This condition has devastated populations of several bird species, notably the greenfinch and chaffinch, leading to substantial declines. The greenfinch, once a common sight in gardens, has seen its numbers plummet by two million, prompting its classification on the red list of endangered species.
The RSPB's recent findings from the Big Garden Birdwatch reveal a stark decline in greenfinches, dropping from seventh place in popularity in 1979 to eighteenth in 2025. This decline reflects a broader trend, as over 16 million households regularly put out food for birds, resulting in an estimated one feeder for every nine birds that utilize them.
Key hygiene practices recommended by the RSPB include: - Thoroughly cleaning feeders at least once a week. - Relocating feeders after each clean to prevent contamination. - Providing water only if it can be changed daily, using fresh tap water. - Cleaning bird baths weekly to maintain a safe environment.
Helen Rowe, a resident from the Isle of Dogs in London, expressed her commitment to adhere to the RSPB’s advice. Despite her fondness for the sparrows that visit her garden, she stated, “I want to support the birds—I don’t want to do anything that’s going to spread disease.”
The RSPB acknowledges these concerns but emphasizes that their overarching goal is to safeguard bird health. The success of this initiative will rely heavily on public cooperation and understanding of the disease transmission risks involved.
In the face of ongoing challenges, bird lovers are encouraged to stay informed and adapt their practices to ensure the sustainability of bird populations. The RSPB’s efforts to combat diseases like trichomonosis serve as a reminder that our actions can have significant consequences on wildlife conservation. As we navigate this evolving landscape, the focus remains on promoting a safe and healthy environment for our garden birds.
In summary, while the joy of feeding birds can be a rewarding experience, adhering to the RSPB’s guidelines will help protect vulnerable species and foster a thriving ecosystem for future generations.

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