This 28 April 2020 video from Britain says about itself:
Are you struggling to tell apart the birds in your garden based on their song? Ahead of #InternationalDawnChorusDay, BTO’s Training Manager, Nick Moran, will be teaching you which bird is which.
Next up are Dunnock and Wren. As the UK’s most numerous bird, Wren song can often be heard exploding from the undergrowth. Nick’s unique mnemonic will make sure you’ll recognise it next time you hear it!