Locustella fluviatilis
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In 3 days <5%
The river warbler (Locustella fluviatilis) is an Old World warbler in the genus Locustella. It breeds in eastern and central Europe and is migratory, wintering in inland southern Africa, from around the Zambezi River south to the vicinity of Pretoria in South Africa.
The genus name Locustella is from Latin and is a diminutive of locusta, "grasshopper". This refers to the song of the common grasshopper warbler and some others in this genus. The specific fluviatilis is Latin for "of a river".
It is a monotypic species, meaning it has no subspecies. This is a largish warbler. The adult has an unstreaked grey-brown back, whitish grey underparts, and a darker undertail, which has white feather tips giving a contrasting pattern. The sexes are identical, as with most warblers, but young birds are yellower below. Some birds can show reduced dark markings on the undertail coverts (caused by more extensive than usual white tips) and thus are closer in appearance to Savi's warbler than typical river warblers. However, they typically still have a streaked breast and more olive colouration on the upperparts.
This is a skulking species which is very... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Białowieża National Park | 🇵🇱 Poland | |
| 2 | Fertő-Hanság National Park | 🇭🇺 Hungary | |
| 3 | Tsavo West National Park | 🇰🇪 Kenya | |
| 4 | Biebrza National Park | 🇵🇱 Poland | |
| 5 | Kiskunság National Park | 🇭🇺 Hungary |
Rare
Under 5% of wildlife watchers report a Eurasian River Warbler sighting in Istanbul on a given day, based on 7 verified sightings from GBIF citizen-science data. It is the 229th most-seen of the 233 birds we can rate there. Over three days the chance rises to under 5%, if each day is a fresh chance.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Eurasian River Warbler in Istanbul on a given day, so our monthly data shows no clear season.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Eurasian River Warbler sightings with a recorded time, and about 7 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
Among the best
Of the 6 cities where we can rate Eurasian River Warbler sightings, Istanbul ranks 6th at under 5%, level with the leaders once rounded. The best odds are in Moscow (Russia, under 5%), Jerusalem (Israel, under 5%) and Warsaw (Poland, under 5%).
GBIF citizen-science records
It is estimated from how often the Eurasian River Warbler is recorded against all the birds logged in Istanbul (7 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.
