A survey suggests most people don't know how to tell common British birds by their songs.
BBC Gardener's World magazine ran an online test for their viewers and more than a thousand people took part.
They had to listen to an audio track of different birds found in the UK.
Only 11% of them could identify the call of a blue tit, a quarter managed to recognise a robin's song and 30% correctly guessed the song of a house sparrow.
Blackbird song was recognised by less than a third.
The only bird whose song was identified by more than half was the wood pigeon.
Get a pen and paper and have a go at the Newsround quiz. Good luck!