Hemixos castanonotus
Silhouette: PhyloPic
In 3 days <5% in a week ~10%
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.
Rare
Under 5% of wildlife watchers report a Chestnut Bulbul sighting in Tuen Mun on a given day, based on 20 verified sightings from GBIF citizen-science data. It is the 125th most-seen of the 183 birds we can rate there. Over three days the chance rises to under 5%, and over a week to about 10%, if each day is a fresh chance.
March
In that month about 10% of wildlife watchers report a Chestnut Bulbul in Tuen Mun on a given day, against under 5% in April to February, the lowest months. That is one of Tuen Mun's driest months, with about 70 mm of rain against 290 mm in June.
14th of 14
Of the 14 cities where we can rate Chestnut Bulbul sightings, Tuen Mun ranks 14th at under 5%. The best odds are in Fuzhou (China, about 40%), Changsha (China, about 30%) and Hangzhou (China, about 30%).
Same family: Pycnonotidae
The closest relatives of the Chestnut Bulbul that you can see in Tuen Mun (family Pycnonotidae, Bulbuls) are Red-whiskered Bulbul (about 80%), Light-vented Bulbul (about 70%) and Sooty-headed 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 Tuen Mun (20 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.
