Marsh warblers are known to sing a wild, urgent, international pastiche of a song peppered with the tunes of more than one hundred other species. Some of the songs are European, picked up at its nesting grounds, but most are African, plucked from the neighborhoods of Uganda, where it spends its winters. Its imitated songs of the Boran cisticola, vinaceous dove, and brubru shrike create a kind of acoustic map of its African travels.
