Zoothera marginata
Silhouette: Francesco "Architetto" Rollandin · PhyloPic
In 3 days ~30% in a week ~50%
The dark-sided thrush (Zoothera marginata) is a species of bird in the thrush family Turdidae. It is also known as the lesser brown thrush, the long-billed ground-thrush, and the dark-sided ground-thrush. The species is monotypic (lacking subspecies) and is closely related to a number of thrushes in the genus Zoothera, including the long-billed thrush and the widespread scaly thrush. It was described by Edward Blyth in 1847 based upon a specimen collected in Rakhine in Burma (Myanmar).
The dark-sided thrush is 24 to 25 cm (9.4–9.8 in) in length and weighs around 80 g (2.8 oz). It has a particularly long blackish bill and the plumage is a contrasting dark brown head with rufous-brown wings. The face has a white loral stripe and a white eyering with a whitish throat and chin. The call is a series of monotone thin whistles.
The species has a discontinuous distribution in the eastern Himalayas, and then a population in the higher areas of Burma, northern Thailand, Laos, Vietnam and the extreme south of China. The species is generally non-migratory but will move down from higher altitudes in winter, and has turned up as a vagrant in Bangladesh... Wikipedia →
Song0:17
India · 2019
© Peter Boesman · XC473137 · CC BY-NC-ND 4.0
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Doi Inthanon National Park | 🇹🇭 Thailand |
More parks will be added in future updates.
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Kathmandu | 🇳🇵 Nepal |
With luck
About 10% of wildlife watchers report a Dark-sided Thrush sighting in Doi Inthanon National Park on a given day, based on 307 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 134th most-seen of the 367 birds we can rate there. Over three days the chance rises to about 30%, and over a week to about 50%, if each day is a fresh chance.
January and February
In those months about 20% of wildlife watchers report a Dark-sided Thrush in Doi Inthanon National Park on a given day, against under 5% in April–July and October–December, the lowest months. Those are among Doi Inthanon National Park's driest months, with about 35 mm of rain a month against 340 mm in August.
Between 3 and 6 pm
Across all the parks we cover, that three-hour window holds the most Dark-sided Thrush sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Only Doi Inthanon National Park, in our data
Doi Inthanon National Park is the only park on Wallace's Line with enough records to rate Dark-sided Thrush sightings: about 10% of wildlife watchers there report one on a given day.
GBIF citizen-science records
It is estimated from how often the Dark-sided Thrush is recorded against all the birds logged in Doi Inthanon National Park (307 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.
