http://mysongbook.de/msb/songs/d/dove.html says, "To the tune of a Kentucky song about The Cuckoo, one of the widest-spread folk songs, also very well known in Britain, Ewan MacColl put some words about a different bird as a symbol of peace. [Hamish Imlach's version identical, apart from lines 3 and 4, with verses 1, 2, 4 by MacColl.] (Dallas, Wars 261)"