Nisaetus cirrhatus
Silhouette: Sheatherius · PhyloPic
In 3 days <5% in a week ~10%
The changeable hawk-eagle (Nisaetus cirrhatus) or crested hawk-eagle is a large bird of prey species of the family Accipitridae. More informal or antiquated English common names include the marsh hawk-eagle or Indian crested hawk-eagle. It is a member of the subfamily Aquilinae, with signature feathers, absent in tropical raptors from outside this subfamily, covering the tarsus. It was formerly placed in the genus Spizaetus, but studies pointed to the group being paraphyletic resulting in the Old World members being placed in Nisaetus and separated from the New World species. It is a typical "hawk-eagle" in that it is an agile forest-dwelling predator and like many such eagles readily varies its prey selection between birds, mammals or reptiles as well as other vertebrates. Among the members of its genus, the changeable hawk-eagle stands out as the most widely distributed, adaptable and abundant species. Individuals show a wide range of variation in plumage from pale to dark, varying with moult and age giving rise to the name "changeable".
The changeable hawk-eagle was formally described in 1788 by the German naturalist Johann Friedrich Gmelin in his revised and expanded... Wikipedia →
| # | City | Country | Daily sighting probability |
|---|---|---|---|
| 1 | Singapore | 🇸🇬 Singapore | |
| 2 | Thrissur | 🇮🇳 India | |
| 3 | Kuala Lumpur | 🇲🇾 Malaysia | |
| 4 | Tamluk | 🇮🇳 India | |
| 5 | Johor Bahru | 🇲🇾 Malaysia | |
| 6 | Kochi | 🇮🇳 India | |
| 7 | Dehradun | 🇮🇳 India | |
| 8 | Kozhikode | 🇮🇳 India | |
| 9 | Ponnani | 🇮🇳 India | |
| 10 | Colombo [Sri Jayawardenepura Kotte] | 🇱🇰 Sri Lanka |
| # | Zoo / Centre | Country | |
|---|---|---|---|
| 1 | Ninoy Aquino Parks & Wildlife Center | 🇵🇭 Philippines | |
| 2 | Gembira Loka Zoo | 🇮🇩 Indonesia | |
| 3 | Surabaya Zoo | 🇮🇩 Indonesia | |
| 4 | Bandung Zoo | 🇮🇩 Indonesia | |
| 5 | Kuala Lumpur Bird Park | 🇲🇾 Malaysia | |
| 6 | Bali Bird Park | 🇮🇩 Indonesia | |
| 7 | Negros Forests and Ecological Foundation Biodiversity Conservation Center | 🇵🇭 Philippines |
Rare
Under 5% of wildlife watchers report a Crested Hawk-Eagle sighting in Colombo [Sri Jayawardenepura Kotte] on a given day, based on 115 verified sightings from GBIF citizen-science data. It is the 108th most-seen of the 204 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.
Any time of year
In every month with enough records, under 5% of wildlife watchers report a Crested Hawk-Eagle in Colombo [Sri Jayawardenepura Kotte] on a given day, so our monthly data shows no clear season.
Between 4 and 7 am
Across all the parks we cover, that three-hour window holds the most Crested Hawk-Eagle 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.
10th of 13
Of the 13 cities where we can rate Crested Hawk-Eagle sightings, Colombo [Sri Jayawardenepura Kotte] ranks 10th at under 5%. The best odds are in Singapore (Singapore, about 20%), Thrissur (India, about 10%) and Kuala Lumpur (Malaysia, about 10%).
Same family: Accipitridae
The closest relatives of the Crested Hawk-Eagle that you can see in Colombo [Sri Jayawardenepura Kotte] (family Accipitridae, Hawks, Eagles, and Kites) are Brahminy Kite (about 50%), White-Bellied Sea-Eagle (about 10%) and Oriental Honey-buzzard (about 10%), with each one's daily chance of a sighting.
GBIF citizen-science records
It is estimated from how often the Crested Hawk-Eagle is recorded against all the birds logged in Colombo [Sri Jayawardenepura Kotte] (115 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.
