Sounds and Vocal Behavior

Very poorly known.

Vocal Array

Virtually all information is from Eaton et al. (3 Eaton, J. A., B. van Balen, N. W. Brickle, and F. E. Rheindt (2016). Birds of the Indonesian Archipelago: Greater Sundas and Wallacea. Lynx Edicions, Barcelona, Spain. Close ). Song (of subspecies keiense) is a high-pitched swee-sip that lasts ca. 0.5 seconds, whereas that of subspecies fulgidum is a series of 5–8 high-pitched tsoo-tsoo-tsoo… notes , given at rate of 3–5 notes/second, and also a buzzier, more rapidly delivered series of 5–10 tzzoo-tzzoo-tzzoo… notes, given at a rate of ca. 7 notes/second. Two calls have been recorded: a buzzy chip and an upslurred swee.

None documented.