Perching on the stem of a tall grass, a Yellow-bellied Prinia (Prinia flaviventris) belts out its trilling song.
Ryan (2006) interprets the song as “a short, rapid burst of varied, somewhat descending musical trills, usually introduced by short “chirp”, e.g. “chirp, didli-idli-u didli-idli-u didli-idli-u” or “titreer, titreer, titireep, titireep, thirrlip, thirrlip…”
As in any calls and songs, do expect some regional differences.
Ryan, P. G., 2006. Family Cisticolidae (Cisticolas and allies). In: del Hoyo, J., A. Elliott & D. A. Christie (eds.). Handbook of the birds of the world. Vol. 11. Old World Flycatchers to Old World Warblers. Lynx Editions, Barcelona. Pp. 378-490.