RSPB Big Garden Birdwatch - start twitching!
This weekend (27-29 January), the RSPB is calling for help in the world's biggest birdwatch.
The Big Garden Birdwatch happens annually across the UK and provides a vital snapshot of the bird population each winter. Last year, 470,000 people took part.
The study records the decline in numbers of our common birds. Since 1979, the study has shown a 52% decline in the number of house sparrows and a 72% decrease in starlings.
It only takes an hour and is simple enough to make into a family activity.
Take a pen and paper and record the highest number of each species that you see during that hour. Then go online and submit your results.
There are guides to help you identify the birds, and if you don't have a garden, the RSPB says you can choose to carry out the study at your local park, instead.
Visit the Big Garden Birdwatch to find out more.
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