Gibbons are monogamous, highly arboreal primates famous for their complex singing behavior. Zoo welfare requires stable pair or family groups, extensive overhead climbing structures, and acoustic accommodation for their singing.
Gibbon welfare in zoos depends critically on pair housing. Solitary gibbons denied pair bonds show behavioral deterioration that is among the clearest evidence of social deprivation in any zoo species. Pair bonds once established are highly stable and disruption causes significant behavioral distress in both partners. Brachiation space — overhead bars spanning large distances — is essential for their locomotion motivation. Singing behavior should be accommodated rather than suppressed: dawn singing is a natural behavior that may cause early visitor complaints but is a sign of good welfare. Zoo siting should consider acoustic separation from noise-sensitive neighboring facilities.