Eurystomus orientalis
Silhouette: Ferran Sayol · PhyloPic
In 3 days <5% in a week ~10%
The Oriental dollarbird (Eurystomus orientalis) is a bird of the roller family, so named because of the distinctive pale blue or white, coin-shaped spots on its wings. It can be found from Australia to Korea, Japan and India.
The Oriental dollarbird was formally described by the Swedish naturalist Carl Linnaeus in 1766 in the twelfth edition of his Systema Naturae under the binomial name Coracias orientalis. Linnaeus based his description on "Le Rollier des Indes" that had been described and illustrated by the French zoologist Mathurin Jacques Brisson in 1760. The type locality is the island of Java in Indonesia. The Oriental dollarbird is now placed in the genus Eurystomus that was introduced in 1816 by the French ornithologist Louis Pierre Vieillot.
A molecular phylogenetic study published in 2018 found that the azure dollarbird (Eurystomus azureus) was nested in a clade containing subspecies of the Oriental dollarbird. Formerly, some authorities have also considered the broad-billed roller and the azure dollarbird to have been subspecies of the oriental dollarbird. The generic name derives from Ancient Greek eurustomos 'wide-mouthed' and the specific epithet is Latin... Wikipedia →
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Singapore | 🇸🇬 Singapore | |
| 2 | Daejeon | 🇰🇷 South Korea | |
| 3 | Johor Bahru | 🇲🇾 Malaysia | |
| 4 | Seoul | 🇰🇷 South Korea | |
| 5 | Kuala Lumpur | 🇲🇾 Malaysia | |
| 6 | Hangzhou | 🇨🇳 China | |
| 7 | Brisbane | 🇦🇺 Australia | |
| 8 | Gwangju | 🇰🇷 South Korea | |
| 9 | Nanjing | 🇨🇳 China | |
| 10 | Sydney | 🇦🇺 Australia |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | San Diego Zoo | 🇺🇸 United States | |
| 2 | Zoo Miami | 🇺🇸 United States | |
| 3 | Taronga Zoo | 🇦🇺 Australia | |
| 4 | Sydney Zoo | 🇦🇺 Australia | |
| 5 | Adelaide Zoo | 🇦🇺 Australia |
Rare
Under 5% of wildlife watchers report a Dollarbird sighting in Guangzhou on a given day, based on 39 verified sightings from GBIF citizen-science data. It is the 143rd most-seen of the 266 birds we can rate there. Over three days the chance rises to under 5%, and over a week to about 10%, if each day is a fresh chance.
May and September
In those months about 10% of wildlife watchers report a Dollarbird in Guangzhou on a given day, against under 5% in June–August and October–April, the lowest months. Those are among Guangzhou's wettest months, with about 220 mm of rain a month against 30 mm in December.
Between 9 am and noon
Across all the parks we cover, that three-hour window holds the most Dollarbird sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
13th of 20
Of the 20 cities where we can rate Dollarbird sightings, Guangzhou ranks 13th at under 5%. The best odds are in Singapore (Singapore, about 20%), Daejeon (South Korea, about 20%) and Johor Bahru (Malaysia, about 20%).
Same order: Coraciiformes
The closest relatives of the Dollarbird that you can see in Guangzhou (order Coraciiformes, Rollers, Kingfishers, and Allies) are Common Kingfisher (about 30%), White-throated Kingfisher (about 20%) and Pied Kingfisher (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Dollarbird is recorded against all the birds logged in Guangzhou (39 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.
