It regularly attracts almost half a million participants who spend an hour counting the birds that visit their gardens.
The records provide a vital snapshot of the UK’s birds each winter so the RSPB can monitor trends and find out how our garden birds are doing.
The RSPB Big Garden Birdwatch 2021 will take place over three days from the 29th to the 31st January.
Find a suitable spot from where you can count birds. If you don’t have a garden then you can go to your local park or other green space.
Spend an hour counting the birds that you see and make a note of them. You can use pen and paper or the RSPB’s online counting tool.
Count the maximum number of birds you see at any one time. Don’t count the total you see over the hour as you may double-count. So if you see 4 sparrows and then later on another 3, the number you need to submit is 4.