05:58Tweet of the DayDavid Salmon on the WoodlarkBBC Radio 4 Duration: 1 minute Mon 29th May 2017, 05:58 on BBC Radio 4 LWAvailable for over a yearListen nowDavid Salmon of the Slimbridge Wetland Centre on the song of the woodlark. Show more GenresFactualScience & NatureBrandTweet of the Day Source: BBC Online