Variable Flying-fox (Pteropus hypomelanus) lives in tropical rainforest across Southeast Asia. It feeds on nectar and fruit. Its conservation status is Near Threatened.
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A real field recording of the Variable Flying-fox, made in the wild.
A small flying fox can ingest roughly half its own body weight each day, a remarkable intake that fuels its nightly foraging. It feeds mainly on the fruit of both native and introduced trees, supplementing its diet with flowers and nectar. Its menu includes pawpaws, mangoes, jambul, bananas, figs and the blossoms of kapok and banyan trees, providing the sugars needed for long flights.
Unlike its close relative the Ryukyu flying fox, the small flying fox has bare tibiae, a key field mark for identification. Its lower legs lack the fur that covers the Ryukyu species, making the contrast obvious when the bat is perched. Additional distinguishing features are its partially furred ears and black wing membranes, which together set it apart from similar bats.
White-bellied sea eagles are recorded hunting small flying foxes by repeatedly dropping them into the sea, a tactic that prevents the bats from escaping once they hit the water. This predation method has been observed in the bats' coastal roosting areas, where the eagles swoop down from above. The repeated drops ensure the birds can subdue their prey effectively.
Twins have been recorded only twice in this species, once in 2009 and again in 2017. Both litters were born at the Lubee Bat Conservancy in Gainesville, Florida, and normally a single pup is produced after a gestation of about 200 days and is weaned at six weeks, staying with its mother for several more months.
A survey in March 2025 counted more than 5,000 small flying foxes in Miagao, Iloilo on Panay Island, providing a baseline for future monitoring. The species occupies islands across the Indo-Pacific and is found at altitudes up to about 900 metres, often roosting on small outlying islands before flying to larger land masses to forage at night.
Sources
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In the twilight skies, a dark silhouette unfolds, as the Variable Flying-fox stretches its leathery wings, a masterful navigator of the night, with a gentle whoosh of sound, it takes to the air. With an effortless glide, it traverses the forest canopy, its large eyes scanning the landscape below for the ripest fruits, its keen sense of smell guiding it to the sweetest nectar. As it moves, its fur a mottled tapestry of brown and grey, the Variable Flying-fox embodies a curious blend of fragility and resilience, a true marvel of evolutionary adaptation.
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