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#0727 · 🐦 birds

Marsh Warbler

🇳🇱 Bosrietzanger ·Acrocephalus palustris

LCleast concern 🐦 Birds 📍 in the Netherlands
Marsh Warbler, photo 1 of 10
1/10 © Jakob Fahr · CC BY-NC 4.0

what is it?

The marsh warbler ( Acrocephalus palustris ) is an Old World warbler currently classified in the family Acrocephalidae. It breeds in temperate Europe and western Asia and winters mainly in south east Africa. It is notable for incorporating striking imitations of a wide variety of other birds into its song.

base stats

  • NL sightings 90iNaturalist, research grade
  • worldwide 9,327iNaturalist observations
  • weight 1.9 gadult, up to
  • threat LCleast concern

Bars compare against all animals on log scales: up to 300,000 Dutch and 600,000 worldwide sightings (the most-seen species), 150 t (blue whale), 30 m and 400 years (Greenland shark).

fun facts

  • Spotted 90 times in the Netherlands on iNaturalist.
  • 9,327 observations worldwide on iNaturalist.
  • Weighs only about 2 g.
  • Scientifically named by Johann Matthäus Bechstein in 1798 (228 years ago).

fact sheet

English
Marsh Warbler
Nederlands
Bosrietzanger
scientific name
Acrocephalus palustris
class
Aves
order
Passeriformes
family
Acrocephalidae
IUCN Red List
LC · least concern
sightings in NL
90
sightings in Europe
5,622
sightings worldwide
9,327
GBIF records in NL
45,557
weight
1.9 g
length
—
lifespan
—
named
1798 by Johann Matthäus Bechstein

IUCN in Dutch: niet bedreigd. Blank means the sources don't say.

relatives· Acrocephalidae

Sources: iNaturalist taxon 116802, Wikidata Q210422, GBIF 2493136, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.

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