Grasshopper Warbler
Grasshopper WarblerGrasshopper WarblerGrasshopper WarblerGrasshopper Warbler

Grasshopper Warbler

Locustella naevia

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
10–20% · With luck
overall probability at Biebrza National Park
247 Verified records at Biebrza National Park
May Best month highest sighting rate
🌅 Crepuscular When it's active at dawn and dusk

The common grasshopper warbler or just grasshopper warbler (Locustella naevia) is a species of Old World warbler in the genus Locustella. It breeds across much of temperate Europe and the western Palearctic. It is migratory, wintering across northern tropical Africa just south of the Sahara, and also locally in India. This small passerine bird is found in dense grassland vegetation, often close to water, and usually with a few small scattered shrubs. It is a medium-sized warbler about 13 cm (5 in) long. The adult has a streaked brown back and whitish grey underparts which are unstreaked except on the undertail coverts. Wikipedia →

10–20% of wildlife watchers report a Grasshopper Warbler sighting in Biebrza National Park, based on 247 days of visitor records from GBIF citizen-science data.

Closest Relatives at Biebrza National Park

Savi's Warbler
LC

Savi's Warbler

☀️ Diurnal Bird

Locustella luscinioides

20–30% · Possible
Eurasian River Warbler
LC

Eurasian River Warbler

☀️ Diurnal Bird

Locustella fluviatilis

<5% · Rare
European Starling
LC Endemic

European Starling

☀️ Diurnal Bird

Sturnus vulgaris

60–70% · Likely
Hooded Crow

Hooded Crow

☀️ Diurnal Bird

Corvus cornix

50–60% · Likely
Chaffinch
LC

Chaffinch

☀️ Diurnal Bird

Fringilla coelebs

50–60% · Likely
Reed Bunting
LC

Reed Bunting

☀️ Diurnal Bird

Emberiza schoeniclus

50–60% · Likely
Yellowhammer
LC

Yellowhammer

☀️ Diurnal Bird

Emberiza citrinella

50–60% · Likely
Barn Swallow
LC

Barn Swallow

☀️ Diurnal Bird

Hirundo rustica

50–60% · Likely
Eurasian Magpie
LC

Eurasian Magpie

🌅 Crepuscular Bird

Pica pica

50–60% · Likely
Great Tit
LC Endemic

Great Tit

☀️ Diurnal Bird

Parus major

50–60% · Likely
Common Chiffchaff
LC

Common Chiffchaff

☀️ Diurnal Bird

Phylloscopus collybita

50–60% · Likely
Skylark
LC

Skylark

☀️ Diurnal Bird

Alauda arvensis

50–60% · Likely

📅 Monthly Probability

<5
Jan
<5
Feb
<5
Mar
<5
Apr
40–50
May
30–40
Jun
10–20
Jul
<5
Aug
<5
Sep
<5
Oct
<5
Nov
<5
Dec

🌅 When They're Spotted

Most active at dawn and dusk · across all parks (global)

🌅Crepuscular
☀️🌙🌙12am6am12pm6pm12am

Global Distribution

Where this species is recorded worldwide. Restricted to human observations from 2019 onwards — the same kind of record and the same period the probabilities on this page are built from, so collar-tracking studies, camera-trap arrays and museum specimens are excluded. Around Santa Rosa that removes 5,924 GPS fixes from a handful of tagged jaguars.

where this species is recorded (GBIF density — it tracks where observers go, not how likely a sighting is)  ·  parks where it occurs — tap a pin for the sighting probability there

Parks Where Found

# Park Country Probability
1 Biebrza National Park 🇵🇱 Poland
10–20%
2 Fertő-Hanság National Park 🇭🇺 Hungary
5–10%
3 Białowieża National Park 🇵🇱 Poland
5–10%
4 Kiskunság National Park 🇭🇺 Hungary
<5%
5 Hortobágy National Park 🇭🇺 Hungary
<5%
6 Snowdonia National Park 🇬🇧 United Kingdom
<5%
7 Wadden Sea National Park 🇩🇪 Germany
<5%
8 Bavarian Forest National Park 🇩🇪 Germany
<5%
9 Cairngorms National Park 🇬🇧 United Kingdom
<5%
10 Pyrénées National Park 🇫🇷 France
<5%
11 Monfragüe National Park 🇪🇸 Spain
<5%
12 Ordesa y Monte Perdido National Park 🇪🇸 Spain
Insufficient data
13 Gauja National Park 🇱🇻 Latvia
Insufficient data
14 Doñana National Park 🇪🇸 Spain
Insufficient data
15 Sierra Nevada National Park 🇪🇸 Spain
Insufficient data
16 Sierra de Guadarrama National Park 🇪🇸 Spain
Insufficient data

Quick answers

What are the chances of seeing a Grasshopper Warbler in Biebrza National Park?

About 18% of wildlife watchers report a Grasshopper Warbler sighting in Biebrza National Park, based on 247 days of visitor records from GBIF citizen-science data.

When is the best time to see Grasshopper Warbler in Biebrza National Park?

May has the highest sighting rate for Grasshopper Warbler in Biebrza National Park in our monthly data.

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