Photo: Gary Leavens / CC BY-SA 2.0 (Wikimedia Commons)
Western Olivaceous Warbler
Iduna opaca
Western Olivaceous Warbler (Iduna opaca) — Songbirds & Perching Birds of Europe & Northern Asia.
Found across 7 guides in our atlas — open any for the full checklist, photos and what's around right now.
The Western Olivaceous Warbler (Iduna opaca) is a member of the Acrocephalidae family found in Europe & Northern Asia. Adults weigh 9 g. The IUCN Red List lists it as Least Concern.
Conservation status
IUCN Red List (opens in a new tab)Widespread and abundant — not currently at risk.
Where it fits
- Class Aves
- Order Passeriformes
- Family Acrocephalidae Reed Warblers & Allies
- Genus Iduna
- Species opaca
Quick facts
- Weight
- 9 g
- Diet
- Invertebrate-eaters
- Family
- Acrocephalidae
- Order
- Passeriformes
- Habitat
- Woodland
How to identify
Similar birds
Least Concern
Least Concern
Near Threatened
Least Concern
Biology & behaviour
Diet
The Western Olivaceous Warbler is a invertivore — it feeds mainly on invertebrates such as insects and other small prey.
Behaviour
A bird of semi-open scrub and shrubland, it spends much of its time perched in trees and shrubs.
Migration
The Western Olivaceous Warbler is migratory, making regular seasonal journeys between its breeding and non-breeding ranges.
The Western Olivaceous Warbler (Iduna opaca) belongs to the Acrocephalidae family of the order Passeriformes. It occurs naturally across Europe & Northern Asia. Its distribution covers PAL sw Europe and nw Africa.
It is a very small bird. Adults weighs around 9 g, with a wing length of about 6.9 cm and a tail of around 5.8 cm.
The IUCN Red List currently assesses it as Least Concern. That category covers species that remain widespread and reasonably abundant in the wild.
The species has a mapped global range of roughly 515,000 km².
Songs & calls
Frequently asked questions
How big is the Western Olivaceous Warbler?
The Western Olivaceous Warbler is a very small bird that weighs around 9 g.
Where does the Western Olivaceous Warbler live?
The Western Olivaceous Warbler is found across Europe & Northern Asia with a range covering PAL sw Europe and nw Africa, where it favours woodland, forest and well-treed country.
What family does the Western Olivaceous Warbler belong to?
The Western Olivaceous Warbler (Iduna opaca) belongs to the Acrocephalidae family, in the order Passeriformes.
What does the Western Olivaceous Warbler eat?
The Western Olivaceous Warbler is a invertivore — it feeds mainly on invertebrates such as insects and other small prey.
Does the Western Olivaceous Warbler migrate?
The Western Olivaceous Warbler is migratory, making regular seasonal journeys between its breeding and non-breeding ranges.
Is the Western Olivaceous Warbler endangered?
The IUCN Red List currently assesses it as Least Concern That category covers species that remain widespread and reasonably abundant in the wild.
What sound does the Western Olivaceous Warbler make?
1 real field recording of the Western Olivaceous Warbler — including its call — can be played in the Songs & calls section on this page, credited to the recordist who captured it.
How large is the Western Olivaceous Warbler's range?
The Western Olivaceous Warbler has a mapped global range of about 515,000 km².
Conservation
Every bird benefits from bird-safe windows, native plants, and keeping cats indoors. Small changes at home add up to real protection.
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Guides for this bird
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