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Crested Goshawk

From Opus

Photo by Peter EricssonKhao Yai, Thailand, March 2006
Photo by Peter Ericsson
Khao Yai, Thailand, March 2006
Accipiter trivirgatus

Contents

[edit] Identification

Female ssp indicusPhoto by SeeToh Bishan Park, Singapore, August 2015
Female ssp indicus
Photo by SeeToh
Bishan Park, Singapore, August 2015

30–46 cm (11¾-18 in); female larger than male
Short broad wings and long tail
Male

  • Dark brown crown
  • Yellow eyes
  • Grey head sides
  • Dark moustachial and mesial stripes
  • Pale underparts has reddish breast streaks and bars on the belly

Female: head sides are browner, and underparts streaks and bars are brown
Juvenile: head feathers have pale fringes. Buff underparts. Grey eyes and lacks the dark mesial stripe

[edit] Similar Species

Besra: which is smaller and lacks the crest.

[edit] Distribution

Southern Asia: breeds in western India and Sri Lanka and from north-east India and the Himalayas east to south-central and southern China and Taiwan, south to the Malay Peninsula. Also occurs on Sumatra, Java, Borneo and the southern Philippine islands of Palawan, Negros, Leyte, Samar and Mindanao as well as numerous smaller islands. Resident.

[edit] Taxonomy

Juvenile, subspecies indicusPhoto by jweeyhSingapore, February 2018
Juvenile, subspecies indicus
Photo by jweeyh
Singapore, February 2018

[edit] Subspecies

There are 11 subspecies[1]:

  • A. t. indicus: India and Nepal to southern China, Indochina and Malay Peninsula
  • A. t. peninsulae: South-western India
  • A. t. layardi: Sri Lanka
  • A. t. formosae: Taiwan
  • A. t. trivirgatus: Sumatra
  • A. t. niasensis: Nias Island (off western Sumatra)
  • A. t. javanicus: Java (vagrant to Bali)
  • A. t. microstictus: Borneo
  • A. t. palawanus: South-western Philippines (Palawan and Calamianes)
  • A. t. extimus: South-eastern Philippine Islands
  • A. t. castroi: Polillo (off Luzon in northern Philippines)

[edit] Habitat

Juvenile in flight ssp indicus Photo by SeeTohBishan Park, Singapore, August 2015
Juvenile in flight ssp indicus
Photo by SeeToh
Bishan Park, Singapore, August 2015

Lowland and hill forest up to about 2,000 m.

[edit] Behaviour

[edit] Flight Action

Typical goshawk action of flap, flap, glide. A woodland specialist which relies on surprise to ambush its prey.

[edit] Diet

Their diet consists of large insects, small mammals, reptiles; such as lizards and frogs, and birds.

[edit] Vocalisation

Juvenile in flight ssp indicus Photo by SeeTohHenderson Waves, Singapore, November 2017
Juvenile in flight ssp indicus
Photo by SeeToh
Henderson Waves, Singapore, November 2017

Mostly quiet. Screams when defending nest.
Call is a screamed he, he, hehehehe

[edit] References

  1. Clements, J. F., T. S. Schulenberg, M. J. Iliff, D. Roberson, T. A. Fredericks, B. L. Sullivan, and C. L. Wood. 2017. The eBird/Clements checklist of birds of the world: v2017, with updates to August 2017. Downloaded from http://www.birds.cornell.edu/clementschecklist/download/
  2. Handbook of the Birds of the World Alive (retrieved March 2016)
  3. Wikipedia

[edit] External Links


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