Garden BirdWatch (GBW)

Garden BirdWatch monitors the changing fortunes of birds and other garden wildlife through its network of 'citizen scientists'. Observations collected by BTO Garden BirdWatchers are analysed by BTO researchers and published in leading journals. BTO Garden BirdWatchers have charted the decline of the House Sparrow, the rise of the Woodpigeon, have discovered that urban birds get up later than their rural counterparts and have alerted conservationists to the impact of an emerging disease in Greenfinches. Find out more about Garden BirdWatch.


Latest GBW News

Goldfinch by Mark R Taylor

What are Goldfinches feeding on in your garden?

While Garden BirdWatchers are telling us that Goldfinches are becoming increasingly common in gardens, we don't fully understand the reasons for this. How important is the food we put out or the plants we grow? Do they truly prefer nyger seed or is sunflower seed their choice treat? We need your help between now and the end of February to find out the answers!
GBW results pages

New Garden BirdWatch interactive results pages

An astounding amount of data has been collected by thousands of volunteer BTO Garden BirdWatchers over the last twenty years but until recently only a fraction of it was available online. Now, thanks to recent developments in technology, we have been able to make more of it available in an interactive way on our results pages allowing the public to find out in greater detail how gardens are used by birds and other wildlife

Blackcap. Photograph by Liz Cutting

Is garden bird feeding driving evolutionary change in Blackcaps?

New research using data from Garden BirdWatch volunteers has revealed that bird food provided in British gardens has helped Blackcaps to rapidly evolve a successful new migration route. This is the first time that garden bird feeding has been shown to affect large-scale bird distributions.