Passer flaveolus
Silhouette: Andrew Butko (modified) · PhyloPic
In 3 days ~20% in a week ~40%
The plain-backed sparrow (Passer flaveolus), also called the Pegu sparrow or olive-backed sparrow, is a sparrow found in Southeast Asia. Its range spans from Myanmar to central Vietnam, and south to the western part of Peninsular Malaysia.
Giebel, C. G. (1877). Thesaurus Ornithologiae (in German). Vol. III. Brockhaus. Summers-Smith, J. Denis (1988). The Sparrows: a Study of the Genus Passer. illustrated by Robert Gillmor. Calton, Staffs, England: T. & A. D. Poyser. ISBN 978-0-85661-048-6.
Pegu sparrow at the Internet Bird Collection Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Khao Yai National Park | 🇹🇭 Thailand | |
| 2 | Doi Inthanon National Park | 🇹🇭 Thailand | |
| 3 | Kaeng Krachan National Park | 🇹🇭 Thailand | |
| 4 | Cat Tien National Park | 🇻🇳 Vietnam |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Phnom Penh | 🇰🇭 Cambodia | |
| 2 | Bangkok | 🇹🇭 Thailand | |
| 3 | Ho Chi Minh City | 🇻🇳 Vietnam |
With luck
About 10% of wildlife watchers report a Plain-backed Sparrow sighting in Khao Yai National Park on a given day, based on 188 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 137th most-seen of the 278 birds we can rate there. Over three days the chance rises to about 20%, and over a week to about 40%, if each day is a fresh chance.
June and July
In those months about 30% of wildlife watchers report a Plain-backed Sparrow in Khao Yai National Park on a given day, against under 5% in September and November–February, the lowest months. Those are among Khao Yai National Park's wettest months, with about 220 mm of rain a month against 15 mm in December.
Yes
Of the 4 parks where we can rate Plain-backed Sparrow sightings, Khao Yai National Park has the highest daily chance: about 10%. Next come Doi Inthanon National Park (Thailand, under 5%) and Kaeng Krachan National Park (Thailand, under 5%).
GBIF citizen-science records
It is estimated from how often the Plain-backed Sparrow is recorded against all the birds logged in Khao Yai National Park (188 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.
