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

Western Olivaceous Warbler

Iduna opaca

Least ConcernNear ThreatenedVulnerableEndangeredCritically Endangered
20–30% · Possible
overall probability at Niokolo-Koba National Park
71 Verified records at Niokolo-Koba National Park
December 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 →

20–30% of wildlife watchers report a Western Olivaceous Warbler sighting in Niokolo-Koba National Park, based on 71 days of visitor records from GBIF citizen-science data.

Closest Relatives at Niokolo-Koba National Park

Melodious Warbler
LC

Melodious Warbler

☀️ Diurnal Bird

Hippolais polyglotta

10–20% · With luck
Eurasian Reed-Warbler
LC

Eurasian Reed-Warbler

☀️ Diurnal Bird

Acrocephalus scirpaceus

<5% · Rare
Long-tailed Glossy Starling
LC

Long-tailed Glossy Starling

☀️ Diurnal Bird

Lamprotornis caudatus

80–90% · Very likely
Yellow-crowned Gonolek
LC

Yellow-crowned Gonolek

☀️ Diurnal Bird

Laniarius barbarus

60–70% · Likely
Common Bulbul
LC

Common Bulbul

☀️ Diurnal Bird

Pycnonotus barbatus

60–70% · Likely
Purple Glossy-Starling
LC

Purple Glossy-Starling

☀️ Diurnal Bird

Lamprotornis purpureus

60–70% · Likely
Beautiful Sunbird
LC

Beautiful Sunbird

☀️ Diurnal Bird

Cinnyris pulchellus

60–70% · Likely
Red-billed Firefinch
LC

Red-billed Firefinch

☀️ Diurnal Bird

Lagonosticta senegala

60–70% · Likely
African Pied Wagtail
LC

African Pied Wagtail

☀️ Diurnal Bird

Motacilla aguimp

40–50% · Likely
Northern Grey-headed Sparrow
LC

Northern Grey-headed Sparrow

☀️ Diurnal Bird

Passer griseus

40–50% · Likely
Brown Babbler
LC

Brown Babbler

☀️ Diurnal Bird

Turdoides plebejus

40–50% · Likely
Green-backed Camaroptera
LC

Green-backed Camaroptera

☀️ Diurnal Bird

Camaroptera brachyura

40–50% · Likely

📅 Monthly Probability

30–40
Jan
10–20
Feb
<5
Mar
30–40
Apr
10–20
May
20–30
Jun
10–20
Jul
20–30
Aug
10–20
Sep
10–20
Oct
10–20
Nov
30–40
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 Niokolo-Koba National Park?

About 22% of wildlife watchers report a Western Olivaceous Warbler sighting in Niokolo-Koba National Park, based on 71 days of visitor records from GBIF citizen-science data.

When is the best time to see Western Olivaceous Warbler in Niokolo-Koba National Park?

December has the highest sighting rate for Western Olivaceous Warbler in Niokolo-Koba National Park in our monthly data.

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