The Indian flying fox (Pteropus giganteus) is one of the largest Old World fruit bats, belonging to the family Pteropodidae. It inhabits the Indian subcontinent, including India, Bangladesh, Nepal, Bhutan, and Sri Lanka, occupying a range of habitats from tropical moist forests and mangroves to urban gardens and agricultural landscapes. Adults possess a wingspan of 1.2–1.5 m and a head‑body length of 30–40 cm, with a robust build, dark brown to black fur, and a distinctive fox‑like face. As a megabat, it relies on keen vision and acute olfaction rather than echolocation to locate ripe fruits, nectar, and flowers. Roosts are formed in large colonies of up to several thousand individuals in tall trees, cliffs, or man‑made structures, where they exhibit strong social cohesion. The species plays a critical ecological role as a seed disperser and pollinator for many tropical plant species, influencing forest regeneration and agricultural productivity. Although currently classified as Least Concern by the IUCN, the Indian flying fox faces localized declines due to habitat loss, hunting, and persecution. Conservation measures focus on protecting roost sites, mitigating human‑bat conflict, and monitoring population trends to ensure the long‑term viability of this keystone frugivore.

Indian flying foxes are highly gregarious, forming colonies that can number from a few dozen to several thousand individuals. They are primarily nocturnal, leaving their roosts at dusk to forage over distances of up to 30 km, often traveling in loose, coordinated columns. Within colonies, individuals maintain a loose hierarchy based on age and sex, with dominant males defending preferred roosting branches and courting females during the breeding season. Communication relies on a repertoire of vocalizations—soft clicks, chirps, and low‑frequency moans—supplemented by visual displays such as wing‑flapping and facial grimacing. Territoriality is limited; home ranges overlap extensively, and bats frequently share foraging patches. Social grooming and mutual roosting provide thermoregulatory benefits, especially during cooler nights. Roost fidelity is high, with colonies returning to the same trees or structures year after year, although they may relocate temporarily in response to disturbance or seasonal fruit availability.

The Indian flying fox is a strict frugivore and nectarivore, feeding on a wide variety of native and cultivated fruits such as mango (Mangifera indica), banana (Musa spp.), figs (Ficus spp.), and dates (Phoenix dactylifera). It also extracts nectar and pollen from flowering trees like Indian rosewood (Dalbergia latifolia) and banyan (Ficus benghalensis). An adult may consume up to 1 kg of fruit per night, selecting ripe, sugar‑rich portions that aid in energy metabolism for long‑distance flight. Feeding occurs primarily in the early evening and pre‑dawn hours, with bats hovering or briefly landing on branches to bite fruit. By discarding seeds in their droppings, they facilitate seed dispersal across fragmented landscapes, often transporting seeds several kilometers from the parent tree. In agricultural regions, they are considered beneficial for pollination and seed spread, though occasional crop raiding can lead to human‑bat conflict. Seasonal shifts in fruit availability drive changes in diet composition, with increased nectar intake during the flowering season of key plant species.

Sexual maturity in Indian flying foxes is reached at 2–3 years for females and 3–4 years for males. Breeding is seasonal, typically occurring between November and January, timed so that births coincide with the peak fruiting period of key plant species. After a brief courtship involving wing‑flapping displays and vocalizations, the female gives birth to a single pup after a gestation of approximately 5.5 months (≈165 days). The newborn weighs about 70 g and is altricial, clinging to the mother’s belly while she forages. Lactation lasts 4–5 months, during which the mother returns to the roost nightly to nurse the pup. Juveniles become volant at about 6 weeks but remain dependent on maternal milk and occasional fruit provisioning until weaning at 4–5 months. Sexual dimorphism is minimal, and females typically reproduce once per year, though some individuals may skip a season in years of poor food availability.

The IUCN classifies the Indian flying fox as Least Concern, estimating a global population of over 1 million mature individuals. Nevertheless, regional populations are declining due to habitat fragmentation, deforestation for agriculture, and urban expansion that reduce roosting trees. Hunting for bushmeat and traditional medicine persists in parts of Bangladesh and northeastern India, accounting for an estimated 5–10 % of local mortality. Roost disturbance from tree felling, construction, and persecution—often fueled by misconceptions about disease transmission—leads to colony abandonment and increased stress. Climate change may alter fruiting phenology, affecting food availability during critical breeding periods. Conservation actions include legal protection under national wildlife laws, designation of roost sites as protected areas, community outreach to mitigate conflict, and monitoring programs that employ acoustic surveys and satellite telemetry to track movements and population trends.

• The Indian flying fox has a wingspan up to 1.5 m, making it one of the largest bat species in the world.
• It can travel up to 30 km in a single night to locate fruiting trees.
• Despite being a bat, it does not use echolocation; it relies on sight and smell.
• It plays a vital role in seed dispersal, helping regenerate tropical forests.
• Colonies often roost in urban areas, leading to frequent human‑bat interactions.