Dicrurus annectens
Silhouette: Ferran Sayol · PhyloPic
In 3 days ~10% in a week ~20%
The crow-billed drongo (Dicrurus annectens) is a species of bird in the family Dicruridae. It is native to moist tropical forests of southeastern Asia where its range extends from India to the Philippines and Indonesia. It is a completely black bird with a shallowly forked tail and is similar in appearance to the black drongo. It breeds between April and June, the cup-shaped nest being built in the fork of a branch by both birds, the female afterwards incubating the eggs. It is a common bird and the IUCN has listed it as "least concern".
The crow-billed drongo was originally described by the English naturalist Brian Houghton Hodgson in 1836 and given the binomial name Bhuchanga annectans. The specific epithet is a misspelling of the Latin word annectens meaning "connecting". This error has been corrected following the rules of the International Commission on Zoological Nomenclature to give the current scientific name Dicrurus annectens. The present genus Dicrurus had been introduced by the French ornithologist Louis Pierre Vieillot in 1816.
This bird, which is similar to the black drongo, is jet-black in color and has a stout bill. It has a forked tail... Wikipedia →
| # | Park | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Khao Sok National Park | 🇹🇭 Thailand | |
| 2 | Royal Bardia National Park | 🇳🇵 Nepal | |
| 3 | Cuc Phuong National Park | 🇻🇳 Vietnam | |
| 4 | Gunung Leuser National Park | 🇮🇩 Indonesia | |
| 5 | Kaeng Krachan National Park | 🇹🇭 Thailand | |
| 6 | Chitwan National Park | 🇳🇵 Nepal | |
| 7 | Khao Luang National Park | 🇹🇭 Thailand | |
| 8 | Taman Negara National Park | 🇲🇾 Malaysia | |
| 9 | Royal Manas National Park | 🇧🇹 Bhutan | |
| 10 | Manas National Park | 🇮🇳 India |
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Hanoi | 🇻🇳 Vietnam | |
| 2 | Kuala Lumpur | 🇲🇾 Malaysia | |
| 3 | Singapore | 🇸🇬 Singapore | |
| 4 | Bangkok | 🇹🇭 Thailand | |
| 5 | Kolkata | 🇮🇳 India |
Rare
Under 5% of wildlife watchers report a Crow-billed Drongo sighting in Chitwan National Park on a given day, based on 43 verified sightings from GBIF citizen-science data from 2019 to 2026. It is the 216th most-seen of the 367 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.
May to September
In those months about 10% of wildlife watchers report a Crow-billed Drongo in Chitwan National Park on a given day, against under 5% in October to April, the lowest months. Those are among Chitwan National Park's wettest months, with about 430 mm of rain a month against almost none in November.
Between 8 and 11 am
Across all the parks we cover, that three-hour window holds the most Crow-billed Drongo sightings with a recorded time, and about 9 in 10 of them come between 6 am and 6 pm: it is a daytime animal.
6th of 10
Of the 10 parks where we can rate Crow-billed Drongo sightings, Chitwan National Park ranks 6th at under 5%. The best odds are in Khao Sok National Park (Thailand, about 10%), Royal Bardia National Park (Nepal, about 10%) and Cuc Phuong National Park (Vietnam, under 5%).
Same genus: Dicrurus
The closest relatives of the Crow-billed Drongo that you can see in Chitwan National Park (genus Dicrurus, Drongos) are Black Drongo (about 70%), Hair-crested Drongo (about 20%) and Greater Racket-tailed Drongo (about 20%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Crow-billed Drongo is recorded against all the birds logged in Chitwan National Park (43 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.
