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Feeders are not the problem
We've pulled this data from the RSPB's own study — the same document used as the basis for their recent announcement. You can download a copy from the RSPB's own repository here.
Hanging feeders
0%
0 of 79 tests positive
Feeding trays
23%
3 of 13 tests positive
Bird baths
23%
6 of 26 tests positive
The message isn't "stop feeding" — it's "stop using flat surfaces, and keep things clean". Tube feeders tested negative in every single sample.
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Greenfinch numbers are in freefall
We've pulled out the below data from the RSPB's study which was used as a basis for their recent announcement.
"Back when the Big Garden Birdwatch started in 1979 Greenfinches were at number seven in the top ten birds seen. This year they were down to number 18." — RSPB, 2026
Comparing to 1979 is an unusual choice. The BTO's data — and the RSPB's own survey — both point to a more recent, and more encouraging, picture.
With Greenfinch numbers on the rise, their decision to focus on them is an interesting choice. Clearly feeding birds must be working for numbers to see such a significant increase in recent years.
BTO findings
According to data from the British Trust for Ornithology (BTO), Greenfinch population numbers are improving from their lowest point:
Population lowest point
2021
Down 76% from 2005 peak
Recovery since lowest
+12%
Index 33.8 → 38.0 (2025)
From 1994 baseline
−66%
Index 100 → 33.8 (2021)
RSPB Big Garden Birdwatch findings
These figures are supported by the RSPB's own Big Garden Birdwatch, which shows a 2.3% increase in mean Greenfinch count between 2025 and 2026, and a rising share of gardens recording the species.
You can download this data for yourself here from he RSPB website here. Or directly download the zip file with all of the data here, also directly from the RPSB website.
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Birds can find enough food without our help
They could — once. The natural food chain that UK garden birds have depended on for centuries is being systematically dismantled. Insects, seeds and berries that once sustained garden bird populations are all in significant decline.
The insect collapse
Insects are the foundation of the garden bird food chain. They're essential for chick-rearing, even for largely seed-eating species and the scale of their decline is alarming:
UK flying insects lost
−60%
Insects lost in England
−65%
Rate of further decline
−63%
What's causing it?
Three interconnected pressures are removing natural food from the landscape:
Pesticides
Pesticides are used in 32% of UK gardens. Research found gardens using any pesticide have 12% fewer house sparrows — and 39% fewer where slug pellets are used. Intensive farming pesticides are the single biggest driver of farmland bird declines across Europe.
Habitat loss
Nearly half of UK front gardens have been paved over. The UK has lost 97% of its wildflower meadows since the 1930s. Hedgerows — critical bird habitat and food source — continue to be removed. Urban birds are losing both nesting sites and foraging ground simultaneously.
Climate change
Warmer springs are shifting insect emergence earlier in the year, creating a mismatch with bird breeding cycles. Chicks hatch when peak insect availability has already passed. This "phenological mismatch" is increasingly affecting survival rates for insect-dependent species.
Should you stop feeding birds in May?
Take a minute to look around your garden and local farmland. Plants are growing — but almost nothing is producing food yet. Add collapsing insect numbers, pesticide-soaked farmland, and the near-total absence of natural food sources in urban areas, and the picture becomes clear.
We've confirmed this to be true in gardens and farmland around us and we'd encourage you to do the same. See for yourself.
Please don't stop feeding birds between May and October. Birds and their young need your support more than ever.
Why supplementary feeding works
With natural food sources under sustained pressure, garden feeders are no longer a luxury — they're a critical part of the support network keeping urban bird populations viable. The evidence is clear:
UK gardens
22M
A collective refuge — if we use them wisely
UK birds lost in 50 years
38M
UK bird population drop
−7%
The UK's 22 million gardens, collectively managed by people like you, represent one of the most significant wildlife habitats in the country. Used well — with clean feeders, quality food, and water — they can genuinely offset what the wider landscape is losing.
For more information on UK gardens and what the ymean for nature, see the RHS State of Gardening Report 2025.