Forgotten Apes | Dr. Susan Cheyne Species

An audio essay on human nature, followed by an interview with primatologist Dr. Susan Cheyne. Susan is the co-director of the Borneo Nature Foundation International and the Borneo River Initiative for Nature Conservation and Communities, she is the Vice Chair of the IUCN Section on Small Apes, and she is also a Senior Lecturer at Oxford Brookes; she has been studying gibbons for about 27 years. Our conversation is wide-ranging, but centers on gibbons. We discuss gibbon locomotion, life among gibbons, the nature and function of gibbon song, gibbon violence, monogamy, and infanticide (and lack thereof), and other subjects. Enjoy.
Dr. Cheyne's research: http://www.susancheyne.com 
IUCN Section on Small Apes: https://gibbons.asia/
 
Timestamps: 
0:00 Are humans naturally monogamous?
17:27 Introducing today's subject and guest
20:25 Gibbon overview (interview starts)
31:57 Why do humans have twins?
34:02 A day in the life of a gibbon
38:57 Studying gibbons
40:37 Forgotten apes
44:06 Monogamy
1:09:27 Violence
1:11:34 Singing
1:17:49 Intelligence
1:23:28 Conservation
 
Sources relevant to the introduction: 
Stewart-Williams & Thomas | "The Ape That Thought It Was a Peacock" | 2013
Fisher | "The Anatomy of Love" | 2016
Ryan & Jethá | "Sex at Dawn" | 2010
Kramer | Pew Research | 2020
Marlowe | Behavioural Processes | 2000
Chapais | Evolutionary Anthropology | 2013
Schacht & Kramer | Sec Behavioral and Evolutionary Ecology | 2019
Shankman | "The Mead–Freeman Controversy Continues" | 2018 (I'm not sure if this view is correct; once again, you can find academics on both sides of this.)