Eurasian River Warbler

Eurasian River Warbler

Locustella fluviatilis

Silhouette: Afsarnayakkan · PhyloPic

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
Daily sighting probability ~20% · Possible
at Białowieża National Park
161 Verified sightings at Białowieża National Park From 2019 to 2026
442 Verified sightings across all 10 parks From 2019 to 2026
May Best month highest sighting rate
☀️ Diurnal When it's spotted during daytime hours (6am–6pm)

About the Eurasian River Warbler

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 →

Global Distribution

Warmer areas are where this animal is recorded most often.

Parks Where Found

# Park Country Daily sighting probability
1 Białowieża National Park 🇵🇱 Poland
~20%
2 Tsavo West National Park 🇰🇪 Kenya
<5%
3 Fertő-Hanság National Park 🇭🇺 Hungary
<5%
4 Biebrza National Park 🇵🇱 Poland
<5%
5 Tsavo East National Park 🇰🇪 Kenya
<5%
6 Hortobágy National Park 🇭🇺 Hungary
<5%
7 Kiskunság National Park 🇭🇺 Hungary
<5%
8 Wadden Sea National Park 🇩🇪 Germany
<5%
9 Bavarian Forest National Park 🇩🇪 Germany
Insufficient data
10 Amboseli National Park 🇰🇪 Kenya
Insufficient data

Quick answers

What are the chances of seeing a Eurasian River Warbler in Białowieża National Park?

About 20% of wildlife watchers report a Eurasian River Warbler sighting in Białowieża National Park, based on 161 verified sightings from GBIF citizen-science data.

When is the best time to see Eurasian River Warbler in Białowieża National Park?

May has the highest sighting rate for Eurasian River Warbler in Białowieża National Park in our monthly data.

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