Hypothesis: similarly, a lot of status-seeking and socializing by long-term pair-bonded human couples is a reliable signal of couple-coordination ability, to intimidate rival couples/families and attract ally couples/families. Gibbon pairs 'duetting' has similar functions.https://twitter.com/HeatherEHeying/status/990263384602955776 …
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Replying to @primalpoly
*looks around SF* This is plausible.
12:58 PM - 28 Apr 2018
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