Tweet of the Day is a series of fascinating stories about our British birds inspired by their calls and songs.
Brett Westwood presents the robin. The autumn song of the Robin is the soundtrack to shortening days, gathering mists and ripening fruit. Robins sing in spring but their autumn song is different. It may sound melancholy to us but for the Robin it has clear purpose - to defend the winter territories that male and female robins establish separately after they've moulted.