Intraspecific variation in bird song has received considerable investigation in recent years (e.g. Borror 1961, Armstrong 1973, Falls and Brooks 1975, Adkisson and Conner 1978, Lein 1978). In this note, I comment on the use of two distinct song types by each of two species of wood warbler (Parulidae) on Vancouver Island and adjacent mainland British Columbia, and discuss these song types in relation to known types of intraspecific variation. Individual variation within a particular song type has been demonstrated for many species and appears to be important in facilitating individual recognition (see references in Falls and McNicholl 1979). Such variation within a given type of song will not be addressed in this note.