Alcedo coerulescens
Silhouette: Steven Traver · PhyloPic
In 3 days ~80% in a week >90%
The cerulean kingfisher (Alcedo coerulescens) is a kingfisher in the subfamily Alcedininae which is native to parts of Indonesia. With an overall metallic blue impression, it is very similar to the common kingfisher, but it is white underneath instead of orange. Males average bluer than females, which have a greenish cast.
It is sometimes called the small blue kingfisher but in Indonesia and parts of Asia that name refers to Alcedo atthis (common kingfisher). The first formal description of the cerulean kingfisher was by the French ornithologist Louis Pierre Vieillot in 1818. He coined the binomial name Alcedo coerulescens. The specific epithet coerulescens is from the Latin caerulescens meaning "bluish". The species is monotypic.
The cerulean kingfisher is a small kingfisher with a length of 13 cm (5.1 in). The upperparts are a range of shades of blue with white lores and a prominent white patch on each side of the neck. The underparts are white with an azure-blue breast-band. The bill is blackish and the legs are dark brown. The female has duller and slightly greenish plumage and a narrower breast band.
The cerulean kingfisher... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Bali Barat National Park | 🇮🇩 Indonesia | |
| 2 | Way Kambas National Park | 🇮🇩 Indonesia |
Likely
About 40% of wildlife watchers report a Small Blue Kingfisher sighting in Bali Barat National Park on a given day, based on 453 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 18th most-seen of the 173 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.
March
In that month about 60% of wildlife watchers report a Small Blue Kingfisher in Bali Barat National Park on a given day, against about 30% in August, the lowest month. That is one of Bali Barat National Park's wettest months, with about 240 mm of rain against 20 mm in August.
Between 2 and 5 am
Across all the parks we cover, that three-hour window holds the most Small Blue Kingfisher sightings with a recorded time, and about half of them come between 6 pm and 6 am: it is most active around dawn and dusk.
Yes
Of the 2 parks where we can rate Small Blue Kingfisher sightings, Bali Barat National Park has the highest daily chance: about 40%. Next come Way Kambas National Park (Indonesia, about 20%).
GBIF citizen-science records
It is estimated from how often the Small Blue Kingfisher is recorded against all the birds logged in Bali Barat National Park (453 verified sightings from 2019 to 2026), 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.
