Heterophasia annectans
Silhouette: Jiekun He · PhyloPic
In 3 days ~10% in a week ~30%
The rufous-backed sibia (Leioptila annectens) is a passerine bird in the family Leiothrichidae. It was formerly placed in the genus Heterophasia but is now the only species in the genus Leioptila. It is found from the Himalayas to south-central Vietnam.
Its natural habitats are subtropical or tropical moist lowland forests and subtropical or tropical moist montane forests. Collar, N. J. & Robson C. 2007. Family Timaliidae (Babblers) pp. 70 – 291 in; del Hoyo, J., Elliott, A. & Christie, D.A. eds. Handbook of the Birds of the World, Vol. 12. Picathartes to Tits and Chickadees. Lynx Edicions, Barcelona. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Namdapha National Park | 🇮🇳 India | |
| 2 | Doi Inthanon National Park | 🇹🇭 Thailand | |
| 3 | Royal Manas National Park | 🇧🇹 Bhutan |
Rare
Under 5% of wildlife watchers report a Rufous-backed Sibia sighting in Royal Manas National Park on a given day, based on 63 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 203rd most-seen of the 388 birds we can rate there. Over three days the chance rises to about 10%, and over a week to about 30%, if each day is a fresh chance.
January, March and May
In those months about 10% of wildlife watchers report a Rufous-backed Sibia in Royal Manas National Park on a given day, against under 5% in February, April, June–July and October–December, the lowest months. Those are among Royal Manas National Park's driest months, with about 170 mm of rain a month against 930 mm in July. August and September have too few records to rate.
3rd of 3
Of the 3 parks where we can rate Rufous-backed Sibia sightings, Royal Manas National Park ranks 3rd at under 5%. The best odds are in Namdapha National Park (India, about 20%) and Doi Inthanon National Park (Thailand, about 20%).
Same genus: Heterophasia
The closest relatives of the Rufous-backed Sibia that you can see in Royal Manas National Park (genus Heterophasia, Sibias) are Rufous Sibia (about 30%) and Long-tailed Sibia (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Rufous-backed Sibia is recorded against all the birds logged in Royal Manas National Park (63 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.
