Cyornis hainanus
Silhouette: L. Shyamal · PhyloPic
In 3 days ~10% in a week ~20%
The Hainan blue flycatcher (Cyornis hainanus) is a bird in the family Muscicapidae. The species was first described by William Robert Ogilvie-Grant in 1900. It is native to southern China, Hainan and Indochina. Its natural habitat is subtropical or tropical moist lowland forests. Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Cat Tien National Park | 🇻🇳 Vietnam | |
| 2 | Kaeng Krachan National Park | 🇹🇭 Thailand | |
| 3 | Khao Yai National Park | 🇹🇭 Thailand | |
| 4 | Cuc Phuong National Park | 🇻🇳 Vietnam | |
| 5 | Doi Inthanon National Park | 🇹🇭 Thailand |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Guangzhou | 🇨🇳 China | |
| 2 | Hanoi | 🇻🇳 Vietnam | |
| 3 | Hong Kong | 🇨🇳 China | |
| 4 | Bangkok | 🇹🇭 Thailand | |
| 5 | Phnom Penh | 🇰🇭 Cambodia |
Rare
Under 5% of wildlife watchers report a Hainan Blue-Flycatcher sighting in Hanoi on a given day, based on 9 verified sightings from GBIF citizen-science data. It is the 78th most-seen of the 97 birds we can rate there. Over three days the chance rises to about 10%, and over a week to about 20%, if each day is a fresh chance.
September
In that month about 20% of wildlife watchers report a Hainan Blue-Flycatcher in Hanoi on a given day, against under 5% in April–August and October–February, the lowest months. That is one of Hanoi's wettest months, with about 220 mm of rain against 20 mm in February.
Between 3 and 6 am
Across all the parks we cover, that three-hour window holds the most Hainan Blue-Flycatcher sightings with a recorded time, and about half of them come between 6 am and 6 pm: it is most active around dawn and dusk.
Among the best
Of the 5 cities where we can rate Hainan Blue-Flycatcher sightings, Hanoi ranks 2nd at under 5%, level with the leaders once rounded. The best odds are in Guangzhou (China, under 5%).
Same family: Muscicapidae
The closest relatives of the Hainan Blue-Flycatcher that you can see in Hanoi (family Muscicapidae, Old World Flycatchers, Robins, and Chats) are Oriental Magpie-Robin (about 60%), White-rumped Shama (about 30%) and Amur Stonechat (about 30%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Hainan Blue-Flycatcher is recorded against all the birds logged in Hanoi (9 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.
