A distinctive plain, all-blue flycatcher-like bird with a light blue bill. Male is handsome, azure blue, often showing a slim dark breast band. Female and juvenile are duller, gray-blue, and lack a breast band. Singles and pairs are active birds, often found in mixed-species flocks in forest and forest edge in the lowlands and into the lower foothills. Restricted to Sulawesi and the Banggai and Sula Islands. Varied calls include a ringing, “way-way-way-way…”, a rapid, agitated-sounding, stuttering “wi-wi-wi-wi-wi-wi…”, and rasping calls.