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Changeable Hawk-Eagle

From Opus

(Redirected from Nisaetus Cirrhatus)
Subspecies cirrhatus Photo by mikemikKanha National Park, Mandla, India, November 2015
Subspecies cirrhatus
Photo by mikemik
Kanha National Park, Mandla, India, November 2015

Alternative name: Crested Hawk-Eagle

Nisaetus cirrhatus

Spizaetus cirrhatus

Contents

[edit] Identification

51–82 cm (20-32ΒΌ in)

  • Brown upperparts
  • White underparts
  • Barred underside of flight feathers and tail
  • Black streaks on throat
  • Dark brown streaks on breast

Sexes alike; females larger

The name is due to the dual morph phases - a dark morph and a pale morph.

[edit] Distribution

Juvenile 'pale morph' Photo by kctsangSingapore, 2006
Juvenile 'pale morph'
Photo by kctsang
Singapore, 2006

Southern Asia: occurs in India, Sri Lanka and the Andamans and Nepal east to Vietnam and south to the Malay Peninsula. Also occurs in the southern Philippines, Borneo, Sumatra and Java.

[edit] Taxonomy

New studies place this species in the genus Nisaetus instead of Spizaetus.

Flores Hawk-Eagle was recently split from this species[1], [2].

[edit] Subspecies

Five subspecies are recognised which are sometimes split in two species [1]:
Crested Hawk-Eagle (Nisaetus cirrhatus):

Subspecies ceylanensisPhoto by Andrew SBundala National Park, Sri Lanka, November 2003
Subspecies ceylanensis
Photo by Andrew S
Bundala National Park, Sri Lanka, November 2003

Changeable Hawk-Eagle (Nisaetus limnaeetus)

Clements [1] now splits this species. However, the other worldlists don't follow yet and the Opus awaits further clarification.

[edit] Habitat

Deciduous and evergreen forests, gallery forests, open woodland and savanna from sea-level up to 3,300m, hunting over forest edge and clearings.

[edit] Behaviour

[edit] Breeding

The stick nest isplaced in a tree. A single greyish-white egg is laid.

[edit] Diet

The diet includes mammals which include squirrels, hares and rats, small and large birds and reptiles such as lizards, frogs and snakes.

[edit] Movements

Generally considered a resident species.

[edit] Vocalisation

Photo by michha62Khanha National Park, Madhya Pradesh, India
Photo by michha62
Khanha National Park, Madhya Pradesh, India

Call: loud, high-pitched ki-ki-ki-ki-ki-ki-ki-ki-kee.

[edit] References

  1. Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2015. The eBird/Clements checklist of birds of the world: v2015, with updates to August 2015. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
  2. Avibase
  3. Handbook of the Birds of the World Alive (retrieved November 2015)
  4. Wikipedia

[edit] External Links


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