The Chaffinch population has fallen by a quarter in just five years.
How you can help
There are lots of ways you can contribute. Many help us by taking part in our fieldwork surveys - but you can support us as a member, become a regional organiser, help at an event, or donate to an appeal. However you choose to support us - thank you.
Featured project
Wetland Bird Survey
Take PartWeBS surveyors monitor the UK's internationally important non-breeding waterbirds. Following a tradition begun in 1947, wetland sites are counted once per month, providing data for population and trends in abundance and distribution.
Support garden bird research - enter our Summer Raffle
Our Summer Raffle will be raising vital funds for our continued work to understand garden birds and their habitats. This year, our fantastic range of prizes aim to help you observe and care for birds in your garden.
Learn more and enter today
If you value impartial science that makes a difference, support BTO with a regular donation.
DonateMake your birdwatching count by taking part in a BTO project today
Volunteer
Chaffinch Appeal
The UK breeding population of Chaffinch has fallen by a quarter in just five years - we urgently need your help to understand why.
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