Head and body length: 45 - 65 cm
Males: 5 - 7.5 kg, Females: 4.5 - 7.3 kg
Unknown, population declining
Semi-deciduous monsoon and tropical evergreen forest
Sing together, swing together. Agile gibbon families begin the day with complex songs, including solos, male-female duets and a coda. These musical calls serve to advertise their territory and the strength of the pair bond. At foraging time, they use their long, powerful arms to swing rapidly from tree to tree in search of sweet fruits, immature leaves and insects. By dispersing seeds, agile gibbons contribute to the health of the ecosystem. But living entirely within closed-canopy forest makes them highly vulnerable to habitat loss and fragmentation. As trees fall, songs may be silenced forever.