Acrocephalus agricola
Silhouette: Yves Hoebeke · PhyloPic
In 3 days ~40% in a week ~70%
The paddyfield warbler (Acrocephalus agricola) is a species of marsh warbler (family Acrocephalidae). It was formerly included in the "Old World warbler" assemblage. The Manchurian reed warbler (A. tangorum) was (and sometimes still is) included in A. agricola as a subspecies.
The genus name Acrocephalus is from Ancient Greek akros, "highest", and kephale, "head". It is possible that Naumann and Naumann thought akros meant "sharp-pointed". The specific agricola is from Latin and means "farmer".
It breeds in the temperate central Palearctic. It is migratory, wintering in Bangladesh, India and Pakistan. It is a rare vagrant to western Europe although there are small breeding populations along the western shores of the Black Sea around the border between Bulgaria and Romania. This passerine bird is a species found in low vegetation such as long grass, reeds and rice. 4–5 eggs are laid in a nest in grass.
At 13 cm (5.1 in) long with a wingspan of 15–17.5 cm (5.9–6.9 in), the paddyfield warbler is close in size to the Eurasian reed warbler but with shorter bill and wingspan. The adult has an unstreaked pale brown back and buff underparts, with a warm brown rump. There is a clearer whitish supercilium and the bill is short and pointed. The sexes are identical, as with most warblers, but young birds are richer buff below. Like most warblers, it is insectivorous.
The song is fast and similar to marsh warbler, with much mimicry and typically acrocephaline whistles added. Its song is weaker and more rhythmic than that of its relative. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Gobi Gurvansaikhan National Park | 🇲🇳 Mongolia | |
| 2 | Keoladeo National Park | 🇮🇳 India | |
| 3 | Manas National Park | 🇮🇳 India | |
| 4 | Chitwan National Park | 🇳🇵 Nepal | |
| 5 | Kaziranga National Park | 🇮🇳 India | |
| 6 | Kanha National Park | 🇮🇳 India |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Vasai-Virar | 🇮🇳 India | |
| 2 | Novosibirsk | 🇷🇺 Russia | |
| 3 | Kolkata | 🇮🇳 India | |
| 4 | Kalyan-Dombivli | 🇮🇳 India | |
| 5 | Kozhikode | 🇮🇳 India | |
| 6 | Coimbatore | 🇮🇳 India | |
| 7 | Tamluk | 🇮🇳 India | |
| 8 | Dhaka | 🇧🇩 Bangladesh | |
| 9 | Mumbai | 🇮🇳 India | |
| 10 | Pune | 🇮🇳 India |
Possible
About 20% of wildlife watchers report a Paddyfield Warbler sighting in Vasai-Virar on a given day, based on 210 verified sightings from GBIF citizen-science data. It is the 64th most-seen of the 217 birds we can rate there. Over three days the chance rises to about 40%, and over a week to about 70%, if each day is a fresh chance.
January–February and November
In those months about 30% of wildlife watchers report a Paddyfield Warbler in Vasai-Virar on a given day, against under 5% in April–June and August–September, the lowest months. Those are among Vasai-Virar's driest months, with about 5 mm of rain a month against 840 mm in July.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Paddyfield Warbler sightings with a recorded time, and about 8 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Yes
Of the 19 cities where we can rate Paddyfield Warbler sightings, Vasai-Virar has the highest daily chance: about 20%. Next come Novosibirsk (Russia, about 10%) and Kolkata (India, under 5%).
Same genus: Acrocephalus
The closest relatives of the Paddyfield Warbler that you can see in Vasai-Virar (genus Acrocephalus, Reed Warblers) are Clamorous Reed Warbler (about 40%) and Blyth's Reed Warbler (about 40%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Paddyfield Warbler is recorded against all the birds logged in Vasai-Virar (210 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.
