Caprimulgus concretus
Silhouette: Ferran Sayol · PhyloPic
In 3 days ~40% in a week ~60%
Bonaparte's nightjar (Caprimulgus concretus), also known as the Sunda nightjar, is a species of nightjar in the family Caprimulgidae. It is native to the islands of Sumatra, Belitung and Borneo. Its natural habitat is subtropical or tropical moist lowland forests. It is threatened by habitat loss.
BirdLife Species Factsheet. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Way Kambas National Park | 🇮🇩 Indonesia |
More parks will be added in future updates.
With luck
About 10% of wildlife watchers report a Bonaparte's Nightjar sighting in Way Kambas National Park on a given day, based on 32 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 121st most-seen of the 205 birds we can rate there. Over three days the chance rises to about 40%, and over a week to about 60%, if each day is a fresh chance.
September
In that month about 30% of wildlife watchers report a Bonaparte's Nightjar in Way Kambas National Park on a given day, against under 5% in October, the lowest month. That is one of Way Kambas National Park's driest months, with about 120 mm of rain against 370 mm in March. November to February have too few records to rate.
Between 6 and 9 pm
Across all the parks we cover, that three-hour window holds the most Bonaparte's Nightjar sightings with a recorded time, and about 8 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.
Only Way Kambas National Park, in our data
Way Kambas National Park is the only park on Wallace's Line with enough records to rate Bonaparte's Nightjar sightings: about 10% of wildlife watchers there report one on a given day.
Same genus: Caprimulgus
The closest relatives of the Bonaparte's Nightjar that you can see in Way Kambas National Park (genus Caprimulgus, Old World Nightjars) are Large-tailed Nightjar (about 70%) and Savanna Nightjar (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Bonaparte's Nightjar is recorded against all the birds logged in Way Kambas National Park (32 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.
