Species of Thailand

Jerdon's baza

Aviceda jerdoni, Edward Blyth, 1842

(In Thai: เหยี่ยวกิ้งก่าสีน้ำตาล)

Jerdon's baza (Aviceda jerdoni) is a moderate sized brown hawk with a thin white-tipped black crest usually held erect. It is found in South-east Asia. It inhabits foothills in the terai and is rarer in evergreen forests and tea estates.

The common name and Latin binomial commemorate the surgeon-naturalist Thomas C. Jerdon.

Description

It is about 46 cm long. It is confusable with crested goshawk or the changeable hawk-eagle in flight, but can be distinguished by the longer upright crest, very broad and rounded paddle-shaped wings and mostly plain and pale underparts. It has a white chin and a bold black mesial stripe.

Several subspecies are recognized within its large distribution range. These include:

  • A. j. jerdoni (Blyth, 1842) - Sikkum to Assam, Burma, Sumatra
  • A. j. ceylonensis (Legge, 1876) - South India and Sri Lanka
  • A. j. borneensis (Sharpe, 1893) - Borneo
  • A. j. magnirostris (Kaup, 1847) - Luzon, Mindanao
  • A. j. leucopias (Sharpe, 1888) - Romblon, Samar, Palawan
  • A. j. celebensis (Schlegel, 1873)

Distribution

It is resident in the terai of North India and foothills of the Eastern Himalayas from Eastern Nepal and Bengal duars to the Assam valley, Western Ghats in Southern India, southern Sri Lanka, Bangladesh, Burma, Thailand, Sumatra, Singapore and Philippines

Habits

The bird is typically seen in pairs making aerial sallies; crest held erect. Occasionally, the birds may be seen in small family parties of 3 to 5 seen in flight near edge of forests. The birds indulge in 'soaring and undulating' display flights near the nest. Breeding season varies locally but the bird is known to breed almost the entire year with the exception of a few months around April and May. Food includes lizards, grasshoppers and other large insects. The stomach contents of a specimen collected in present-day Kurseong included agamid lizard, Japalura variegata, several longicorn beetles and mantises.

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Category / Seasonal Status

BCST Category: Recorded in an apparently wild state within the last 50 years

BCST Seasonal statuses:

  • Resident or presumed resident
  • Non-breeding visitor

Scientific classification

Kingdom
Animalia
Phylum
Chordata
Class
Aves
Order
Accipitriformes
Family
Accipitridae
Genus
Aviceda
Species
Aviceda jerdoni

Common names

  • Thai: เหยี่ยวกิ้งก่าสีน้ำตาล

Subspecies

  • Aviceda jerdoni borneensis, Richard Bowdler Sharpe, 1893

    Range: Borneo

  • Aviceda jerdoni celebensis, Hermann Schlegel, 1873

  • Aviceda jerdoni ceylonensis, William Vincent Legge, 1876

    Range: South India and Sri Lanka

  • Aviceda jerdoni jerdoni, Edward Blyth, 1842

    Range: Sikkum to Assam, Burma, Sumatra

  • Aviceda jerdoni leucopias, Richard Bowdler Sharpe, 1888

    Range: Romblon, Samar, Palawan

  • Aviceda jerdoni magnirostris, Johann Jakob Kaup, 1847

    Range: Luzon, Mindanao

Conservation status

Least Concern (IUCN3.1)

Least Concern (IUCN3.1)

Near Threatened (IUCN3.1)

Near Threatened (ONEP)

Near Threatened (IUCN3.1)

Near Threatened (BCST)

Photos

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Jerdon's baza
Jerdon's baza
Aviceda jerdoni

Range Map

Distribution map of Jerdon's baza, Aviceda jerdoni in Thailand
  • Ban Lat District, Phetchaburi
  • Bang Saphan Noi District, Prachuap Khiri Khan
  • Chiang Dao District, Chiang Mai
  • Chiang Saen District, Chiang Rai
  • Doi Inthanon National Park
  • Huai Kha Khaeng Wildlife Sanctuary
  • Kaeng Krachan National Park
  • Kaeng Krung National Park
  • Khao Dinsor (Chumphon Raptor Center)
  • Khao Khitchakut National Park
  • Khao Luang National Park
  • Khao Phra - Bang Khram Wildlife Sanctuary
  • Khao Soi Dao Wildlife Sanctuary
  • Khao Sok National Park
  • Khao Yai National Park
  • Khlong Saeng Wildlife Sanctuary
  • Mae Ai District, Chiang Mai
  • Mae Wong National Park
  • Mueang Chumphon District, Chumphon
  • Mueang Uttaradit District, Uttaradit
  • Nam Nao National Park
  • Namtok Sam Lan National Park
  • Phu Suan Sai National Park
  • Sakaerat Environmental Research Station
  • Thung Salaeng Luang National Park
  • Wang Mai Forest Restoration Project
Range map of Aviceda jerdoni in Thailand