During vocalization the bird's tail was waved slowly up & down through about 30 dregrees, not "in time" to the calls.
Ronald I Orenstein
24 Jun 1974
- near Taivi Falls (S of Apia), Upolu
- Tropical Forest
- PANASONIC UNSPECIFIED MODEL
cf Notornis 26:181-184 (1979) for details of observation of this species and illustration of sonograms of its calls.