Horornis flavolivaceus
Silhouette: Sheatherius · PhyloPic
In 3 days ~70% in a week >90%
The aberrant bush warbler (Horornis flavolivaceus) is a species in the bush warbler family, Cettiidae. It was formerly included in the "Old World warbler" assemblage. It is found in central and southern China, and the northern extremes of Myanmar and Vietnam. It occurs in the countries of Bhutan, China, India, Indonesia, Laos, Malaysia, Myanmar, Nepal, Philippines, Thailand, Timor-Leste and Vietnam and also may occur in northeastern and southeastern Bangladesh.
The aberrant bush warbler was formally described in 1845 by the English zoologist Edward Blyth based on a specimen collected in Nepal. He placed the species in the genus Neornis and coined the binomial name Neornis flavolivacea. The specific epithet flavolivaceus combines the Latin flavus meaning "yellow" with the Modern Latin olivaceus meaning "olive-green". The aberrant bush warbler is now placed in the genus Horornis that was introduced in 1845 by Brian Hodgson.
Thirteen subspecies are recognised: H. f... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Kinabalu Park | 🇲🇾 Malaysia | |
| 2 | Langtang National Park | 🇳🇵 Nepal | |
| 3 | Kerinci Seblat National Park | 🇮🇩 Indonesia | |
| 4 | Chitwan National Park | 🇳🇵 Nepal | |
| 5 | Jim Corbett National Park | 🇮🇳 India | |
| 6 | Doi Inthanon National Park | 🇹🇭 Thailand |
Likely
About 40% of wildlife watchers report an Aberrant Bush-Warbler sighting in Kinabalu Park on a given day, based on 942 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 33rd most-seen of the 247 birds we can rate there. Over three days the chance rises to about 70%, and over a week to over 90%, if each day is a fresh chance.
March
In that month about 50% of wildlife watchers report an Aberrant Bush-Warbler in Kinabalu Park on a given day, against about 30% in April–June, August and November–February, the lowest months.
Between 2 and 5 am
Across all the parks we cover, that three-hour window holds the most Aberrant Bush-Warbler 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.
Yes
Of the 6 parks where we can rate Aberrant Bush-Warbler sightings, Kinabalu Park has the highest daily chance: about 40%. Next come Langtang National Park (Nepal, about 10%) and Kerinci Seblat National Park (Indonesia, about 10%).
Same family: Cettiidae
The closest relatives of the Aberrant Bush-Warbler that you can see in Kinabalu Park (family Cettiidae, Bush Warblers and Allies) are Mountain Tailorbird (about 50%), Bornean Stubtail (about 40%) and Yellow-bellied Warbler (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Aberrant Bush-Warbler is recorded against all the birds logged in Kinabalu Park (942 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.
