Acrocephalus orientalis
Silhouette: Yves Hoebeke · PhyloPic
In 3 days ~50% in a week ~80%
The Oriental reed warbler (Acrocephalus orientalis) is a passerine bird of eastern Asia belonging to the reed warbler genus Acrocephalus. It was formerly classified as a subspecies of the great reed warbler (A. arundinaceus) of the western Palearctic.
It is a large warbler, 18–20 cm long with a wingspan of 23–26 cm. The plumage is brown above with a paler rump and whitish tips to the tail feathers. The underparts are whitish below, browner on the flanks and undertail-coverts. There are narrow greyish streaks on the throat and breast. It has a dark eyestripe and a whitish stripe above the eye. The fairly long, heavy bill is brownish above and pink below with a bright orange gape. The feet are grey.
It is slightly smaller, slenderer and shorter-winged than the great reed warbler. Its tail is shorter and more square-ended than that of the clamorous reed warbler (A. stentoreus) and it has a slightly longer primary projection and a slightly shorter and thicker bill. The pale tip to the tail separates it from both species.
The song is a mixture of warbling phrases and guttural, croaking notes. It is given from a prominent perch such as the top of a reed stem or bush. The... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Nikko National Park | 🇯🇵 Japan | |
| 2 | Kaeng Krachan National Park | 🇹🇭 Thailand | |
| 3 | Cat Tien National Park | 🇻🇳 Vietnam |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Shijiazhuang | 🇨🇳 China | |
| 2 | Phnom Penh | 🇰🇭 Cambodia | |
| 3 | Ho Chi Minh City | 🇻🇳 Vietnam | |
| 4 | Đà Nẵng | 🇻🇳 Vietnam | |
| 5 | Beijing | 🇨🇳 China | |
| 6 | Jinan | 🇨🇳 China | |
| 7 | Kitakyushu | 🇯🇵 Japan | |
| 8 | Sendai | 🇯🇵 Japan | |
| 9 | Tianjin | 🇨🇳 China | |
| 10 | Lanzhou | 🇨🇳 China |
Possible
About 20% of wildlife watchers report an Oriental Reed-Warbler sighting in Phnom Penh on a given day, based on 390 verified sightings from GBIF citizen-science data. It is the 30th most-seen of the 154 birds we can rate there. Over three days the chance rises to about 50%, and over a week to about 80%, if each day is a fresh chance.
April
In that month about 40% of wildlife watchers report an Oriental Reed-Warbler in Phnom Penh on a given day, against under 5% in June to September, the lowest months. That is one of Phnom Penh's driest months, with about 60 mm of rain against 190 mm in June.
Among the best
Of the 30 cities where we can rate Oriental Reed-Warbler sightings, Phnom Penh ranks 2nd at about 20%, level with the leaders once rounded. The best odds are in Shijiazhuang (China, about 20%).
GBIF citizen-science records
It is estimated from how often the Oriental Reed-Warbler is recorded against all the birds logged in Phnom Penh (390 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.
