Western Olivaceous Warbler
Western Olivaceous WarblerWestern Olivaceous WarblerWestern Olivaceous WarblerWestern Olivaceous Warbler

Western Olivaceous Warbler

Iduna opaca

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
5–10% · Rare
overall probability at Doñana National Park
153 Verified records at Doñana National Park
July Best month highest sighting rate
☀️ Diurnal When it's active during daytime hours (6am–6pm)

The western olivaceous warbler (Iduna opaca), also known as the isabelline warbler, is a "warbler", formerly placed in the Old World warblers when these were a paraphyletic wastebin taxon. It is now considered a member of the acrocephaline warblers, Acrocephalidae, in the tree warbler genus Iduna. It was formerly regarded as part of a wider "olivaceous warbler" species, but as a result of modern taxonomic developments, this species is now usually considered distinct from the eastern olivaceous warbler, Iduna pallida. Wikipedia →

5–10% of wildlife watchers report a Western Olivaceous Warbler sighting in Doñana National Park, based on 153 days of visitor records from GBIF citizen-science data.

Closest Relatives at Doñana National Park

Eurasian Reed-Warbler
LC

Eurasian Reed-Warbler

☀️ Diurnal Bird

Acrocephalus scirpaceus

20–30% · Possible
Melodious Warbler
LC

Melodious Warbler

☀️ Diurnal Bird

Hippolais polyglotta

5–10% · With luck
Great Reed-Warbler
LC

Great Reed-Warbler

☀️ Diurnal Bird

Acrocephalus arundinaceus

5–10% · With luck
African Reed-Warbler

African Reed-Warbler

☀️ Diurnal Bird

Acrocephalus baeticatus

Insufficient data
Sedge Warbler
LC

Sedge Warbler

☀️ Diurnal Bird

Acrocephalus schoenobaenus

<5% · Rare
Aquatic Warbler
VU

Aquatic Warbler

🌅 Crepuscular Bird

Acrocephalus paludicola

Insufficient data
Spotless Starling
LC

Spotless Starling

🌅 Crepuscular Bird

Sturnus unicolor

60–70% · Likely
European Stonechat

European Stonechat

☀️ Diurnal Bird

Saxicola rubicola

50–60% · Likely
Cetti's Warbler
LC

Cetti's Warbler

☀️ Diurnal Bird

Cettia cetti

50–60% · Likely
Barn Swallow
LC

Barn Swallow

☀️ Diurnal Bird

Hirundo rustica

50–60% · Likely
Eurasian Goldfinch
LC

Eurasian Goldfinch

☀️ Diurnal Bird

Carduelis carduelis

50–60% · Likely
Sardinian Warbler
LC Endemic

Sardinian Warbler

🌅 Crepuscular Bird

Curruca melanocephala

50–60% · Likely

📅 Monthly Probability

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

☀️ When They're Spotted

Most active during daytime hours (6am–6pm) · across all parks (global)

☀️Diurnal
☀️🌙🌙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 Niokolo-Koba National Park 🇸🇳 Senegal
20–30%
2 Doñana National Park 🇪🇸 Spain
5–10%
3 Sierra Nevada National Park 🇪🇸 Spain
Insufficient data
4 Monfragüe National Park 🇪🇸 Spain
Insufficient data

Quick answers

What are the chances of seeing a Western Olivaceous Warbler in Doñana National Park?

About 5% of wildlife watchers report a Western Olivaceous Warbler sighting in Doñana National Park, based on 153 days of visitor records from GBIF citizen-science data.

When is the best time to see Western Olivaceous Warbler in Doñana National Park?

July has the highest sighting rate for Western Olivaceous Warbler in Doñana National Park in our monthly data.

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