Springwatch host Chris Packham has embarked on his latest song challenge - by slipping the names of songs by The Clash into the show.
Viewers have been impressed by previous efforts of namechecking tracks by The Smiths, Manic Street Preachers and The Cure.
He signalled The Clash were the recipients this time around by mentioning 'Should I Stay Or Should I Go' within moments of the BBC show opening.
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Packham's previously taken on The Smiths:
...and The Cure:
