Pacific Black Duck

Pacific Black Duck DECRESCENDO CALL

Putative nocturnal call type

from HANZAB "Structured as sequence of rapidly repeated quacks with initial explosive quality, varying in length and declining in amplitude along with slight decrease in pitch"

Project detections: 4 annotations; 2 nights; recorded in October; most recent detection 12 Oct 2026.

Project clips

Pacific Black Duck harsher quack

Evidence for identification

Need to check carefully for teal (or other dabbling ducks)

Project detections: 22 annotations; 5 nights; recorded in May, June, July; most recent detection 12 Jul 2026.

Project clips

Pacific Black Duck RAEHB Strongly supported

Putative nocturnal call type

This is the typical relaxed quack of HANZAB.

Evidence for identification

Perfect match to working knowledge of the species, but still need to analyse spectrograms precisely.

Confidence statement

High confidence since this is a well-known vocalisation also given during the day.

Similar species / confusion risks

Other ducks.

Project detections: 30 annotations; 9 nights; recorded in March, May, June, July, August, September; most recent detection 19 Sep 2026.

Project clips

Pacific Black Duck WINGBEATS Strongly supported

Evidence for identification

Until we learn how to tell these conclusively, we are only accepting wingbeats where a call is also heard and unambiguously associated with the wingbeats.

Confidence statement

High confidence since our records are only those in context with a call.

Similar species / confusion risks

Many potential confusion species until we nail down how to separate wingbeats from recordings alone.

Project detections: 11 annotations; 10 nights; recorded in March, May, June, July, August; most recent detection 23 Aug 2026.

Project clips