Great Reed-Warbler

Great Reed-Warbler

Acrocephalus arundinaceus

Silhouette: Yves Hoebeke · PhyloPic

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
Daily sighting probability ~20% · Possible
at Biebrza National Park
434 Verified sightings at Biebrza National Park From 2019 to 2026
3,146 Verified sightings across all 34 parks From 2019 to 2026
June Best month highest sighting rate
☀️ Diurnal When it's spotted during daytime hours (6am–6pm)

About the Great Reed-Warbler

The great reed warbler (Acrocephalus arundinaceus) is an insectivorous bird in the family Acrocephalidae. It is a medium-sized passerine bird and the largest of the warblers. It breeds throughout mainland Europe and the Western Palearctic and migrates to sub-Saharan Africa in the winter. It favours reed beds during the breeding season, while living in reed beds, bush thickets, rice fields, and forest clearings during the winter. It exhibits relatively low sexual dimorphism, and the sexes are similar in appearance. This species mates both polygynously and monogamously.

The great reed warbler was formally described in 1758 by the Swedish naturalist Carl Linnaeus in the tenth edition of his Systema Naturae. He placed it with the thrushes in the genus Turdus and coined the binomial name Turdus arundinaceus. He specified the type locality as Northern Europe. Linnaeus based his entry on the Turdus musicus palustris or Bruch Beiden Rohr Drossel that had been described in 1750 by the German naturalist Jacob Theodor Klein in his book Historiae avium prodromus. The specific epithet arundinaceus is Latin meaning "like a reed" (hence "of the reeds"), from arundo, arundinis meaning... 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
~30%
2 Fertő-Hanság National Park 🇭🇺 Hungary
~30%
3 Hortobágy National Park 🇭🇺 Hungary
~20%
4 Biebrza National Park 🇵🇱 Poland
~20%
5 Kiskunság National Park 🇭🇺 Hungary
~20%
6 Camargue 🇫🇷 France
~10%
7 Doñana National Park 🇪🇸 Spain
~10%
8 Monfragüe National Park 🇪🇸 Spain
~10%
9 Bavarian Forest National Park 🇩🇪 Germany
<5%
10 Pyrénées National Park 🇫🇷 France
<5%
11 Tsavo West National Park 🇰🇪 Kenya
<5%
12 Sierra Nevada National Park 🇪🇸 Spain
<5%
13 Volcanoes National Park 🇷🇼 Rwanda
<5%
14 Tsavo East National Park 🇰🇪 Kenya
<5%
15 Nairobi National Park 🇰🇪 Kenya
<5%
16 Chobe National Park 🇧🇼 Botswana
<5%
17 Wadden Sea National Park 🇩🇪 Germany
<5%
18 Virunga National Park 🇨🇩 Democratic Republic of the Congo
<5%
19 Kruger National Park 🇿🇦 South Africa
<5%
20 Garden Route National Park 🇿🇦 South Africa
Insufficient data
21 Mkomazi National Park 🇹🇿 Tanzania
Insufficient data
22 Gauja National Park 🇱🇻 Latvia
Insufficient data
23 Aigüestortes National Park 🇪🇸 Spain
Insufficient data
24 Moremi Game Reserve 🇧🇼 Botswana
Insufficient data
25 Amboseli National Park 🇰🇪 Kenya
Insufficient data
26 Kibale National Park 🇺🇬 Uganda
Insufficient data
27 Murchison Falls National Park 🇺🇬 Uganda
Insufficient data
28 Tarangire National Park 🇹🇿 Tanzania
Insufficient data
29 Serengeti National Park 🇹🇿 Tanzania
Insufficient data
30 Tatra National Park 🇸🇰 Slovakia
Insufficient data
31 Ngorongoro Conservation Area 🇹🇿 Tanzania
Insufficient data
32 Queen Elizabeth National Park 🇺🇬 Uganda
Insufficient data
33 iSimangaliso Wetland Park 🇿🇦 South Africa
Insufficient data
34 Sierra de Guadarrama National Park 🇪🇸 Spain
Insufficient data

Quick answers

What are the chances of seeing a Great Reed-Warbler in Biebrza National Park?

About 20% of wildlife watchers report a Great Reed-Warbler sighting in Biebrza National Park, based on 434 verified sightings from GBIF citizen-science data.

When is the best time to see Great Reed-Warbler in Biebrza National Park?

June has the highest sighting rate for Great Reed-Warbler in Biebrza National Park in our monthly data.

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