Phylloscopus trochiloides
Silhouette: Jiekun He · PhyloPic
In 3 days ~60% in a week ~90%
The greenish warbler (Phylloscopus trochiloides) is a widespread leaf warbler with a breeding range in northeastern Europe, and temperate to subtropical continental Asia. This warbler is strongly migratory and winters in India. It is not uncommon as a spring or early autumn vagrant in Western Europe and is annually seen in Great Britain. In Central Europe large numbers of vagrant birds are encountered in some years; some of these may stay to breed, as a handful of pairs does each year in Germany.
Like all leaf warblers, it was formerly placed in the "Old World warbler" assemblage, but now belongs to the new leaf-warbler family Phylloscopidae. The genus name Phylloscopus is from Ancient Greek phullon, "leaf", and skopos, "seeker" (from skopeo, "to watch"). The specific trochiloides is from Ancient Greek trokhalos, "bowed", and -oides "resembling", from the similarity to the willow warbler, P. trochilus. The English name of this species provides a perfect argument in favour of the capitalisation of species names (i.e. treating them as proper nouns), a convention which is generally applied in scientific literature. The decapitalised "greenish warbler" is equally descriptive of many bird species across multiple families, whereas a capitalised "Greenish Warbler" shows unambiguously that Phylloscopus trochiloides is under discussion. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Eravikulam National Park | 🇮🇳 India | |
| 2 | Kanha National Park | 🇮🇳 India | |
| 3 | Mudumalai National Park | 🇮🇳 India | |
| 4 | Periyar National Park | 🇮🇳 India | |
| 5 | Bandhavgarh National Park | 🇮🇳 India | |
| 6 | Chitwan National Park | 🇳🇵 Nepal | |
| 7 | Jiuzhaigou National Park | 🇨🇳 China | |
| 8 | Keoladeo National Park | 🇮🇳 India | |
| 9 | Bandipur National Park | 🇮🇳 India | |
| 10 | Satpura National Park | 🇮🇳 India | |
| 11 | Sundarbans National Park | 🇮🇳 India | |
| 12 | Nagarhole National Park | 🇮🇳 India | |
| 13 | Ranthambore National Park | 🇮🇳 India | |
| 14 | Kaziranga National Park | 🇮🇳 India | |
| 15 | Royal Bardia National Park | 🇳🇵 Nepal | |
| 16 | Langtang National Park | 🇳🇵 Nepal | |
| 17 | Gir National Park | 🇮🇳 India | |
| 18 | Hemis National Park | 🇮🇳 India | |
| 19 | Manas National Park | 🇮🇳 India | |
| 20 | Jim Corbett National Park | 🇮🇳 India | |
| 21 | Doi Inthanon National Park | 🇹🇭 Thailand | |
| 22 | Royal Manas National Park | 🇧🇹 Bhutan | |
| 23 | Gobi Gurvansaikhan National Park | 🇲🇳 Mongolia | |
| 24 | Namdapha National Park | 🇮🇳 India | |
| 25 | Kaeng Krachan National Park | 🇹🇭 Thailand | |
| 26 | Wadden Sea National Park | 🇩🇪 Germany |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Jabalpur | 🇮🇳 India | |
| 2 | Raipur | 🇮🇳 India | |
| 3 | Asansol | 🇮🇳 India | |
| 4 | Yekaterinburg | 🇷🇺 Russia | |
| 5 | Nagpur | 🇮🇳 India | |
| 6 | Bhubaneshwar | 🇮🇳 India | |
| 7 | Tamluk | 🇮🇳 India | |
| 8 | Patna | 🇮🇳 India | |
| 9 | Nizhny Novgorod | 🇷🇺 Russia | |
| 10 | Hyderabad | 🇮🇳 India |
Possible
About 30% of wildlife watchers report a Greenish Warbler sighting in Periyar National Park on a given day, based on 1,235 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 39th most-seen of the 227 birds we can rate there. Over three days the chance rises to about 60%, and over a week to about 90%, if each day is a fresh chance.
January–February and October
In those months about 40% of wildlife watchers report a Greenish Warbler in Periyar National Park on a given day, against under 5% in July and August, the lowest months. Those are among Periyar National Park's driest months, with about 120 mm of rain a month against 410 mm in August.
Between 7 and 10 am
Across all the parks we cover, that three-hour window holds the most Greenish Warbler sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
4th of 26
Of the 26 parks where we can rate Greenish Warbler sightings, Periyar National Park ranks 4th at about 30%. The best odds are in Eravikulam National Park (India, about 60%), Kanha National Park (India, about 30%) and Mudumalai National Park (India, about 30%). All parks ranked.
Same genus: Phylloscopus
The closest relatives of the Greenish Warbler that you can see in Periyar National Park (genus Phylloscopus, Leaf Warblers) are Green Warbler (about 20%) and Large-billed Leaf-Warbler (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Greenish Warbler is recorded against all the birds logged in Periyar National Park (1,235 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.
