Olive-backed Tailorbird

Olive-backed Tailorbird

Orthotomus sepium

Silhouette: Sheatherius · PhyloPic

LCLeast ConcernNTVUENCR Endemic
Daily sighting probability ~40% · Likely
at Jakarta

In 3 days ~80% in a week >90%

479 Verified sightings at Jakarta
641 In 1 park From 2019 to 2026
May Best month
🌙 Nocturnal When it's spotted

About the Olive-backed Tailorbird

The olive-backed tailorbird (Orthotomus sepium) is a species of passerine bird formerly placed in the "Old World warbler" assemblage, it but now placed in the family Cisticolidae. It is endemic to the islands of Java, Madura Island, Bali and Lombok. It resides in open forests, often perching on short trees and shrubs.

It is small, with a rust-colored head. It is insectivorous. It forages for caterpillars, spiders, and small insects. It is often seen in groups, and is known to engage in group vocalizations. Wikipedia →

Sounds

Song0:33

Indonesia · 2025

Untung Sarmawi · XC1000455 · CC0

Duet0:20

Indonesia · 2021

© Panji Gusti Akbar · XC666467 · CC BY-NC-SA 4.0

Call0:16

Indonesia · 2012

© Frank Lambert · XC166517 · CC BY-NC-ND 4.0

Global Distribution

Parks Where Found

# Park Country Daily sighting probability
1 Bali Barat National Park 🇮🇩 Indonesia
~60%

More parks will be added in future updates.

Cities Where Found

# City Country Daily sighting probability
1 Jakarta 🇮🇩 Indonesia
~40%
2 Denpasar 🇮🇩 Indonesia
~40%
3 Yogyakarta 🇮🇩 Indonesia
~30%
4 Bandung 🇮🇩 Indonesia
~20%

Before you go

What are the chances of seeing an Olive-backed Tailorbird in Jakarta?

Likely

About 40% of wildlife watchers report an Olive-backed Tailorbird sighting in Jakarta on a given day, based on 479 verified sightings from GBIF citizen-science data. It is the 13th most-seen of the 138 birds we can rate there. Over three days the chance rises to about 80%, and over a week to over 90%, if each day is a fresh chance.

When is the best time to see an Olive-backed Tailorbird in Jakarta?

May

In that month about 60% of wildlife watchers report an Olive-backed Tailorbird in Jakarta on a given day, against about 30% in February, the lowest month.

What time of day is best to see an Olive-backed Tailorbird?

Between 2 and 5 am

Across all the parks we cover, that three-hour window holds the most Olive-backed Tailorbird sightings with a recorded time, and about 7 in 10 of them come between 6 pm and 6 am: it is mostly seen at night.

Is Jakarta the best place to see an Olive-backed Tailorbird?

Yes

Of the 4 cities where we can rate Olive-backed Tailorbird sightings, Jakarta has the highest daily chance: about 40%. Next come Denpasar (Indonesia, about 40%) and Yogyakarta (Indonesia, about 30%).

Which relatives of the Olive-backed Tailorbird live in Jakarta?

Same genus: Orthotomus

The closest relatives of the Olive-backed Tailorbird that you can see in Jakarta (genus Orthotomus, Typical Tailorbirds) are Ashy Tailorbird (about 10%) and Common Tailorbird (about 10%), with each one's daily chance of a sighting.

Where does the Olive-backed Tailorbird sighting chance come from?

GBIF citizen-science records

It is estimated from how often the Olive-backed Tailorbird is recorded against all the birds logged in Jakarta (479 verified sightings), calibrated against known sighting rates. Figures are rounded to the nearest 10% because citizen-science data supports honest approximations, not decimals, and months with records from fewer than five people show "—". How it works.

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