[2] The males' characteristic song consists of repeating the same pitch at increasing volume.

[2] Females sometimes duet with them by singing at decreasing pitches.

[2] Bangwa forest warblers sing more frequently in wet than dry season; this difference is especially pronounced in males.

[2] Their peak of vocal activity is during the first hour after sunrise.

[2] Males have a second peak of vocal activity 11 hours after sunrise, but females do not.