#0912 · 🐦 birds

Barred Warbler

🇳🇱 Sperwergrasmus ·Curruca nisoria

LCleast concern 🐦 Birds 📍 in the Netherlands

9 photos from iNaturalist (Creative Commons) · credits & licences

what is it?

The barred warbler ( Curruca nisoria ) is a typical warbler which breeds across temperate regions of central and eastern Europe and western and central Asia. This passerine bird is strongly migratory, and winters in tropical eastern Africa.

base stats

NL sightings 5iNaturalist, research grade
worldwide 2,176iNaturalist observations
weight 2.6 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 5 times in the Netherlands on iNaturalist.
2,176 observations worldwide on iNaturalist.
Weighs only about 3 g.
Scientifically named by Johann Matthäus Bechstein in 1792 (234 years ago).

fact sheet

English: Barred Warbler
Nederlands: Sperwergrasmus
scientific name: Curruca nisoria
class: Aves
order: Passeriformes
family: Sylviidae
IUCN Red List: LC · least concern
sightings in NL: 5
sightings in Europe: 1,636
sightings worldwide: 2,176
GBIF records in NL: 0
weight: 2.6 g
length: —
lifespan: —
named: 1792 by Johann Matthäus Bechstein

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

relatives· Sylviidae

Sources: iNaturalist taxon 1289488, Wikidata Q104867606, GBIF 10983621, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.