05:58Tweet of the DayJoe Harkness on the skylarkBBC Radio 4 Duration: 1 minute Thu 1st Jun 2017, 05:58 on BBC Radio 4 FMAvailable for over a yearListen nowJoe Harkness enjoys the sight and song of the skylark. Show more GenresFactualScience & NatureBrandTweet of the Day Source: BBC Online