Preface David Chivers; Introduction Susan M. Cheyne, Helen J. Chatterjee, Carolyn Thompson and Peng-Fei Fan; 1. Taxonomy, ecology and conservation of Cao Vit Gibbon (Nomascus nasutus) since its rediscovery Peng-Fei Fan and Chang-Yong Ma; 2. Conservation status of the northern Yellow-Cheeked Crested Gibbon (Nomascus annamensis) in Vietnam: an update Duc Minh Hoang, Bang Van Tran, Chuong Van Hoang and Herbert H. Covert; 3. Strategies for recovery of the Hainan Gibbon (Nomascus hainanus): twenty years of multidisciplinary conservation effort Bosco Pui Lok Chan and Yik Fui Philip Lo; 4. Gibbons in the anthropocene: lessons from a long-term study in Indonesia Susan M. Cheyne, Abdulaziz K, Supiansyah, Twentinolosa, Adul, Claire J. H. Thompson, Lindy Thompson, Reychell Chadwick, Helene Birot, Carolyn Thompson, Cara H. Wilcox and Eka Cahyaningrum; 5. Demography of a stable Gibbon population (Hylobates moloch) in high-elevation forest on Java Susan Lappan, Rahayu Oktaviani, Ahyun Choi, Soojung Ham, Haneul Jang, Sanha Kim, Yoonjung Yi, Ani Mardiastuti and Jae Chun Choe; 6. A tale of two Gibbon studies in Thailand Sompoad Srikosamatara and Intanon Kolasartsanee; 7. Accessibility as a factor for selecting conservation actions for Pileated Gibbons (Hylobates pileatus) Intanon Kolasartsanee and Sompoad Srikosamatara; 8. Calling from the wild: Mentawai Gibbon conservation fieldwork Arif Setiawan and Damianus Tatteburuk; 9. Demography and group dynamics of Western Hoolock gibbons (Hoolock hoolock) in a community conserved village population in Upper Assam, India Jihosuo Biswas, Diplob Chutia, Jayanta Das, Joydeep Shil and H. N. Kumara; 10. Challenges and prospects in the conservation of Hoolock Gibbons in India Dilip Chetry, Rekha Chetry and Parimal Chandra Bhattacharjee; 11. Gibbons of Assam: impacts of environment and anthropogenic disturbance Jayashree Mazumder; 12. Movement ecology of siamang in a degraded dipterocarp forest Christopher D. Marsh, Stephanie A. Poindexter, Ross A. Hill, Matthew G. Nowak, Abdullah Abdullah and Amanda H. Korstjens; 13. Sympatric Gibbons in historically logged forest in North Sumatra, Indonesia Emma L. Hankinson, Vincent Nijman, Amanda H. Korstjens, Matt G. Nowak and Ross A. Hill; 14. Adopting an interdisciplinary biosocial approach to determine the conservation implications of the Human-Gibbon Interface: a systematic review Carolyn Thompson, Helen J. Chatterjee, Samuel Turvey, Susan M. Cheyne and Peng-Fei Fan; 15. Listen to the people, hear the Gibbons sing: the importance of incorporating local people's perceptions in conservation Jaima H. Smith, Anton Ario, Rahayu Oktaviani, Arif Setiawan, Agung Gunawan and Vincent Nijman; 16. Long-Term outcomes of positive cultural value for biodiversity: historical insights from Chinese Gibbons Samuel Turvey; 17. Gibbon phylogenetics and genomics Lucia Carbone, Mariam Okhovat and Christian Roos; 18. The use of microsatellites in the management of captive Gibbons Lauren Lansdowne, Matyas Liptovszky, Kristiana Brink, Katie Dripps, Vivienne Li, Ed Hollox and Richard Badge.