Changeable Hawk-Eagle (Nisaetus cirrhatus)
Illustration redrawn by AI from a real photograph

Changeable Hawk-Eagle

Nisaetus cirrhatus (Gmelin, JF, 1788)

≈74 cmLength134 cmWingspan1.5 kgWeight

Its crest varies from long to short and is sometimes barely visible.

Busiest months: February and November–December · Most records: India, Singapore, Sri Lanka

Least Concern

How to identify

Field marks

  1. Adult back usually dark brown
  2. Crest varies in length and may be absent
  3. Adult tail long with fine barring
  4. Adult legs long and feathered

Male, female and young

Female generally larger than male; adult eyes yellow to orange-yellow, juvenile eyes gray-brown to pale green.

Voice

Usually silent; gives high shrieks in the breeding season.

Where and when it's recorded

Changeable Hawk-Eagle has been recorded at 508 of the 8,276 birding hotspots we track, in 15 countries and regions.

Records by month Northern Hemisphere

Where it's recorded most

  1. Kanha NP – Mukki ZoneIndia1,127 records
  2. Yala National ParkSri Lanka895 records
  3. Dairy Farm Nature ParkSingapore879 records
More places
  1. Kranji MarshSingapore821 records
  2. Kalamassery – HMT Estate AreaIndia725 records
  3. Gunung Panti Recreational Forest – Panti Bird Sanctuary and North AreaMalaysia691 records
  4. Corbett NP – DhikalaIndia658 records
  5. Uda Walawe NPSri Lanka600 records
  6. Henderson WavesSingapore590 records
  7. Chidyatapu Biological ParkIndia547 records

Countries and regions with the most records

IndiaSingaporeSri LankaMalaysiaCambodiaNepalIndonesiaThailand

eBird records via GBIF up to 2024-12-31. A record means someone listed it; more records partly mean more birders, not more birds.

About

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.

Excerpt from Wikipedia, CC BY-SA 4.0 · authors · Read more on Wikipedia

Questions

How big is the Changeable Hawk-Eagle?

The Changeable Hawk-Eagle is about ≈74 cm long, with a wingspan of 134 cm and weighs around 1.5 kg.

Where does the Changeable Hawk-Eagle live?

Its breeding range: Oriental: Himalayas, central, southern India and Sri Lanka to Greater Sundas and Philippines. It is most often recorded in India, Singapore and Sri Lanka.

When is the best time to see the Changeable Hawk-Eagle?

At the hotspots we track, it is recorded most in February, November and December (Northern Hemisphere).

Is the Changeable Hawk-Eagle endangered?

The IUCN Red List classifies the Changeable Hawk-Eagle as Least Concern.

What does the Changeable Hawk-Eagle eat?

Main food: Vertebrate prey.

What family is the Changeable Hawk-Eagle in?

It belongs to the family Kites, Hawks, Eagles (Accipitridae), order Accipitriformes.

At a glance

Length
≈74 cm
Wingspan
134 cm
Weight
1.5 kg
Habitat
Forest
Diet
Vertebrate prey
Lifestyle
Perches in trees
Migration
Resident (barely migrates)
Conservation
Least Concern
More measurements
Wing
415 mm
Tail
290 mm
Bill
50 mm
Tarsus
98 mm

Averages from the AVONET dataset; length from field guides where available.

Range

Oriental: Himalayas, central, southern India and Sri Lanka to Greater Sundas and Philippines

Breeding range, IOC World Bird List 15.2

Classification

Family
Kites, Hawks, Eagles Accipitridae
Genus
Nisaetus

Other birds in the genus Nisaetus

Changeable Hawk-Eagle

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Free to use with credit: “Illustration: Bird Album (birdalbum.com)”. Drawn by AI from a reference photo by Prashanth N S. ↗

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