Bonnet Macaque (Macaca radiata)

Why in News?

Nine bonnet macaques were found dead near Palode, Thiruvananthapuram, raising fears of poisoning or disease. Foam around their mouths suggests toxicity. Post-mortem was inconclusive, with toxicology and disease tests, including for Kyasanur Forest Disease, underway. The Forest Department has registered a case.

Description:

  • Type: Old-World monkey (Family: Cercopithecidae).
  • Region: Native to the Oriental region, especially Southern India.
  • Feature: Distinct bonnet-like whorl of hair on its head.
  • Habitat:
    • Natural: Evergreen & dry deciduous forests of the Western Ghats.
    • Human-dominated: Urban, suburban, and agricultural landscapes.

Behaviour & Ecology:

  • Lifestyle: Arboreal + terrestrial quadrupeds; diurnal.
  • Social structure: Multi-male, multi-female troops (~30 members).
  • Communication:
    • Visual (grinning, clicking), tactile, and vocal.
    • Alarm calls for predators.
    • Can recognize alarm calls of sympatric primates → Hanuman langurs & Lion-tailed macaques.

Reproduction & Lifespan:

  • Maturity: Females mature ~3 years.
  • Birth age: Around 4 years.
  • Gestation: ~24 weeks.
  • Infant care: Nurse for 6–7 months, remain close to mothers ~1 year.

Feeding Habits:

  • Omnivorous: Fruits, leaves, insects, bird eggs, lizards.
  • Near humans: Known to raid food offerings, trash bins, and gardens → frequent human–wildlife conflict.

Conservation Status:

  • Wildlife (Protection) Act, 1972: Schedule I (highest protection in India).
  • IUCN Red List: Vulnerable.

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