Hipposideros armiger
Silhouette: T. Michael Keesey · PhyloPic
In 3 days ~10% in a week ~20%
The great roundleaf bat, also known as the great Himalayan leaf-nosed bat (Hipposideros armiger) is a species of bat in the family Hipposideridae found in South Asia, Southeast Asia, and China. It gives birth to two young a year. It has been assessed as a least concern species by the IUCN.
There are four recognised subspecies of the bat. H. a. traninhensis The great roundleaf bat is similar in appearance to the closely related intermediate roundleaf bat (H. larvatus). However, the great roundleaf bat is larger and possesses four, not three, lateral accessory leaflets on each side of the main noseleaf. This bat has a forearm length up to 9.8 cm, and weighs up to 60 g. After an experiment published by Kathryn Knight, in which they painted the accessory leaflets and the ears and videotaped them, it was concluded that when they clicked, the leaflets closed and their ears bent down. When listening to the clicking they opened their noseleaf and their ears.
It breeds once a year and gives birth to two young. Females have been found pregnant from January to early May... Wikipedia →
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Taiwan · 2023
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Thailand · 2023
Светлана Царахова · iNaturalist · CC0
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Taiwan · 2025
© 陳界良 · iNaturalist · CC BY-NC 4.0
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Taroko National Park | 🇹🇼 Taiwan |
More parks will be added in future updates.
No species of the same family or order lives in Taipei, so these are its closest relatives here: other mammals.
Rare
Under 5% of wildlife watchers report a Great Roundleaf Bat sighting in Taipei on a given day, based on 9 verified sightings from GBIF citizen-science data. It is the 9th most-seen of the 10 mammals we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
July to September
In those months about 10% of wildlife watchers report a Great Roundleaf Bat in Taipei on a given day, against under 5% in October to June, the lowest months. Those are among Taipei's wettest months, with about 230 mm of rain a month against 90 mm in February.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Great Roundleaf Bat sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 2 cities where we can rate Great Roundleaf Bat sightings, Taipei has the highest daily chance: under 5%. Next come Hong Kong (China, under 5%).
GBIF citizen-science records
It is estimated from how often the Great Roundleaf Bat is recorded against all the mammals logged in Taipei (9 verified sightings), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.
