What are the chances of seeing a Yellow-vented Bulbul in Surabaya?
Possible
About 20% of wildlife watchers report a Yellow-vented Bulbul sighting in Surabaya on a given day, based on 18 verified sightings from GBIF citizen-science data. It is the 10th most-seen of the 27 birds we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
When is the best time to see a Yellow-vented Bulbul in Surabaya?
July and November
In those months about 30% of wildlife watchers report a Yellow-vented Bulbul in Surabaya on a given day, against about 10% in December to February, the lowest months. Those are among Surabaya's driest months, with about 85 mm of rain a month against 330 mm in January. April and June have too few records to rate.
What time of day is best to see a Yellow-vented Bulbul?
Between 1 and 4 am
Across all the parks we cover, that three-hour window holds the most Yellow-vented Bulbul sightings with a recorded time, and about 6 in 10 of them come between 6 pm and 6 am: it is most active around dawn and dusk.
Is Surabaya the best place to see a Yellow-vented Bulbul?
18th of 20
Of the 20 cities where we can rate Yellow-vented Bulbul sightings, Surabaya ranks 18th at about 20%. The best odds are in Phnom Penh (Cambodia, over 90%), Denpasar (Indonesia, about 90%) and Davao City (Philippines, about 90%).
Which relatives of the Yellow-vented Bulbul live in Surabaya?
Same order: Passeriformes
The closest relatives of the Yellow-vented Bulbul that you can see in Surabaya (order Passeriformes, Perching Birds) are Nutmeg Mannikin (about 20%), Eurasian Tree Sparrow (about 20%) and White-headed Munia (about 20%), with each one's daily chance of a sighting.
Where does the Yellow-vented Bulbul sighting chance come from?
GBIF citizen-science records
It is estimated from how often the Yellow-vented Bulbul is recorded against all the birds logged in Surabaya (18 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.