Hylobates agilis Cuvier, 1821, west Sumatra, Indonesia. Three subspecies: in the Malay Peninsula (H. a. unko); in most of Sumatra (H. a. agilis); in southwest Borneo (Kalimantan) (H. a. albibarbis)
OTHER COMMON NAMES
English: Dark-handed gibbon; French: Gibbon agile; German: Schwarzhand-Gibbon.
Size 16.5-18.5 in (42-47 cm); female 12.2-14.1 lb (5.55-6.4 kg). Polychromatic, dark brown, almost black to light buff,
through to brown and golden. Male, white eyebrows and whitish cheeks; female, white eyebrows; young, complete white face ring. Grayer and darker on cap and chest in Borneo.
Malay Peninsula, north of Mudah and Kelantan Rivers into southern Thailand; Sumatra, south of Lake Toba; southwest Borneo (Kalimantan Barat ande Tengah), south of Kapuas River and west of Barito River.
Population density 4.3 groups/2.5 mi2 (km2); home range 72 ac (29 ha), 76% defended as territory: 54 ac (22 ha); day range 0.8 mi (1.3 km). Male, diphasic hoots; female, great call, eight notes, shorter, higher pitched, rising notes, stable climax, 15 seconds.
FEEDING ECOLOGY AND DIET
Diet is mainly fruit, including figs, also flowers, leaves, and animal matter.
Monogamous. Produce single young every two to three years.
Lower Risk/Near Threatened.
SIGNIFICANCE TO HUMANS
Elusive, respected, popular as pet in some areas. ♦
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