https://xeno-canto.org/615683/download
Recorded by Nature sounds by Simply Birding · via xeno-canto · CC BY-NC-ND 4.0
African Oystercatcher — Flight call
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Knob-billed Duck — Call
Listen to / download the recording The Knob-billed Duck. Recorded by vir joshi · via xeno-canto · CC BY-NC-SA 3.0
Torrent Duck — Alarm call
Listen to / download the recording The Torrent Duck. Recorded by Cristian Pinto · via xeno-canto · CC BY-NC-SA 4.0
Falkland Steamer Duck — Call
Listen to / download the recording The Falkland Steamer Duck. Recorded by Barry Edmonston · via xeno-canto · CC BY-NC-SA 4.0