Hemixos castanonotus
Silhouette: PhyloPic
In 3 days ~70% in a week ~90%
The chestnut bulbul or chestnut-backed bulbul (Hemixos castanonotus) is a songbird in the bulbul family, Pycnonotidae. The species was first described by Robert Swinhoe in 1870. It is found in southern China and northern Vietnam. Its natural habitat is subtropical or tropical moist lowland forests; it primarily resides in the canopy.
It is an omnivore. Formerly, some authorities classified the chestnut bulbul in the genus Hypsipetes and also as a subspecies of the ashy bulbul. Wikipedia →
| # | Park | Country | Daily sighting probability |
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More parks will be added in future updates.
Possible
About 30% of wildlife watchers report a Chestnut Bulbul sighting in Hangzhou on a given day, based on 524 verified sightings from GBIF citizen-science data. It is the 24th most-seen of the 219 birds we can rate there. Over three days the chance rises to about 70%, and over a week to about 90%, if each day is a fresh chance.
December
In that month about 50% of wildlife watchers report a Chestnut Bulbul in Hangzhou on a given day, against about 20% in March, June and August–October, the lowest months. That is one of Hangzhou's driest months, with about 65 mm of rain against 250 mm in June.
3rd of 14
Of the 14 cities where we can rate Chestnut Bulbul sightings, Hangzhou ranks 3rd at about 30%. The best odds are in Fuzhou (China, about 40%) and Changsha (China, about 30%).
Same family: Pycnonotidae
The closest relatives of the Chestnut Bulbul that you can see in Hangzhou (family Pycnonotidae, Bulbuls) are Light-vented Bulbul (about 80%), Black Bulbul (about 30%) and Mountain Bulbul (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Chestnut Bulbul is recorded against all the birds logged in Hangzhou (524 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.
