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

Red Admiral by John Harding

Red Admiral resurgence in gardens

Earlier this year, Garden BirdWatch reported that butterflies were showing dramatic patterns of emergence, promising another successful year. Most common garden butterfly species did appear in high numbers, but this year's winner was definitely the Red Admiral.

Rook by John Harding

How clever are the Rooks in your garden?

The BTO are working with avian intelligence researchers to study how Rooks behave in gardens, and we want your records of interesting Rook behavior. Gardens provide the perfect opportunity to study the behaviour of Rooks as there are new problems for them to solve, such as how to feed from bird feeders. The survey runs from July to December. If you have Rooks visiting your garden, take a look at the Garden Rook Survey pages for more information.

Dunnock with avian pox by Dave Wragg

Help monitor the health of garden wildlife

A new project to monitor the health of garden wildlife went live this summer. Called Garden Wildlife Health, the project allows you to submit observations of sick, dead and diseased wildlife and to (optionally) send carcasses to project vets for post mortem examination. You'll need to register with the project in order to access the online system (which you can do here). The project has also faciliated a small number of changes to our existing GBW Online system. Click here to find out what these changes are and what they mean to your weekly recording. Garden Wildlife Health is a joint project between the Institute of Zoology, BTO, Froglife and the RSPB. More information appears on the project website (