05:58Tweet of the DayVegetarian Tree FinchBBC Radio 4 Duration: 1 minute Mon 10th Nov 2014, 05:58 on BBC Radio 4 LWAvailable for over a yearListen nowChris Packham presents the vegetarian tree finch on the Galapagos Islands. Show more GenresFactualScience & NatureBrandTweet of the Day Source: BBC Online