Description: English: Video illustrating gaze alternation and looking at a group member before producing waa barks. Video is filmed from position 2 illustrated in Figure S2 in File S1. Focal adult female Nambi reacts to the arrival of her adult son Musa by turning and looking at Musa before producing her first waa barks of the trial. Nambi then looks immediately back at the snake, showing gaze alternation between the recipient and the snake whilst calling. During Nambi’s waa bark production, Musa stands bipedally. Date: 2013. Source: Video S2 from Schel A, Townsend S, Machanda Z, Zuberbuhler K, Slocombe K (2013). "
Chimpanzee Alarm Call Production Meets Key Criteria for Intentionality". PLOS ONE.
DOI:
10.1371/journal.pone.0076674.
PMID 24146908.
PMC:
3797826. Author: Schel A, Townsend S, Machanda Z, Zuberbuhler K, Slocombe K. Permission (
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