Mosia nigrescens
Silhouette: T. Michael Keesey · PhyloPic
In 3 days ~30% in a week ~60%
The dark sheath-tailed bat (Mosia nigrescens) is a species of sac-winged bat in the family Emballonuridae. It is the only species in the genus Mosia. It is found in Indonesia, Papua New Guinea, and the Solomon Islands. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Raja Ampat | 🇮🇩 Indonesia |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Dark Sheath-tailed Bat sighting in Raja Ampat on a given day, based on 6 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 8th most-seen of the 13 mammals we can rate there. Over three days the chance rises to about 30%, and over a week to about 60%, if each day is a fresh chance.
June–July and October
In those months about 30% of wildlife watchers report a Dark Sheath-tailed Bat in Raja Ampat on a given day, against under 5% in August–September and November–May, the lowest months.
Between 8 and 11 pm
Across all the parks we cover, that three-hour window holds the most Dark Sheath-tailed Bat sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is seen both by day and at night.
Only Raja Ampat, in our data
Raja Ampat is the only park on Wallace's Line with enough records to rate Dark Sheath-tailed Bat sightings: about 10% of wildlife watchers there report one on a given day.
Same order: Chiroptera
The closest relatives of the Dark Sheath-tailed Bat that you can see in Raja Ampat (order Chiroptera, Bats) are Moluccan Naked-backed Fruit Bat (about 20%) and Spectacled Flying Fox (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Dark Sheath-tailed Bat is recorded against all the mammals logged in Raja Ampat (6 verified sightings from 2019 to 2026), 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.
