Facts about Gray Langurs
- 09
Female gray langurs reach sexual maturity between 3.5 and 4.5 years of age, significantly later than males who mature at approximately 2 to 3 years, creating distinct reproductive timelines within troops.
- 08
Across their range in South Asia, gray langurs spend approximately 60 to 70 percent of their foraging time selecting and consuming leaves rather than fruits, making them nearly obligate folivores.
- 07
Dominant male gray langurs form bachelor groups called solitary males or bachelor bands that roam territories seeking reproductive opportunities within established troops.
- 06
Leaf-eating gray langurs possess a multi-chambered stomach with a pH around 5.5 that ferments plant matter similarly to ruminants, allowing them to extract maximum nutrition from fibrous vegetation.
- 05
Approximately 40 to 50 gray langurs typically form a single troop, with some populations in northern India experiencing seasonal migrations of up to 15 kilometers between summer and winter habitats.
- 04
Infants of gray langurs develop a distinctive white or pale yellow coat that darkens to gray around 3 to 4 months of age as they mature.
- 03
Loud, distinctive vocalizations produced by male gray langurs can travel up to 2 kilometers through forest canopy to establish territorial boundaries and coordinate group movements.
- 02
Troop hierarchies in gray langurs are dominated by females who collectively defend infants and exclude infanticidal males from group territories.
- 01
With a body length of 16 to 24 inches, gray langurs inhabit the Indian subcontinent and possess specialized stomachs for digesting unripe fruits and leaves.