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Jerdon's Baza
Aviceda jerdoni

Status: Lower risk

Population Trend: Unknown.

Other Names: Asian Baza, Blyth's Baza, Brown Baza, Brown Lizard-hawk, Crested Lizard-hawk, Legge's Baza.

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Aviceda jerdoni
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Distribution: Indomalayan. Southwestern Indian subcontinent, southern CHINA (Yunnan, Hainan), and PHILIPPINES south through SUMATRA, BORNEO and east to SULAWESI (Banggai, Sula). more....

Subspecies: 5 races. A. j. borneensis: BORNEO; A. j. celebensis: SULAWESI (Banggai Island, SULA ISLANDS); A. j. ceylonensis: Southwestern INDIA and SRI LANKA; some individuals winter farther south; A. j. jerdoni: Northeastern INDIA east through MYANMAR and southern CHINA (Hainan), THAILAND, and parts of Indochina to northern Malay Peninsula; SUMATRA; A. j. magnirostris: PHILIPPINES (Palawan, Samar, Mindanao).

Taxonomy: The species of Aviceda were originally thought to be related to falcons because of their notched bill, but they are probably most closely related to kites. Wink and Sauer-Gürth (2004) found that they constitute an independent lineage clustering near the base of the Accipitridae in the Gypaetus/Neophron assemblage, based on nucleotide sequences of the mitochondrial cytochrome b gene. A. jerdoni forms a superspecies with A. cuculoides, A. madagascariensis, and A. subcristatus (Sibley and Monroe 1990), and they are sometimes regarded as conspecific (Eck 1976).

Movements: Partial migrant (Bildstein 2006).

Habitat and Habits: Occurs in primary forest and freshwater swamp forest in lowlands and foothills; also at forest edges and in partially cleared areas. Perches in well concealed positions in the crowns of tall trees, often at the edge of primary forest. In Sabah, it is often found in logged forests (Sheldon et al. 2001). Rarely soars high over the forest, and often travels and hunts below the canopy (Robson 2000). Coates and Bishoip (1997) also observed that its flight is sluggish and that it circles at canopy level. Perhaps largely crepuscular (Coates and Bishop 1997, Kennedy et al. 2000). Occurs singly, or occasionally in pairs.

Food and Feeding Behavior: Feeds on snakes, lizards, frogs, and insects. Insects are captured by sallying from a perch. more....

Breeding: The nest is a bulky structure with a fairly deep cup and placed 7-20 m high in a tree. A nest in Sumatra was in a 35 m high tree near a main road in a primary Dipterocarp forest (Buij 2003, Buij et al. 2006). The clutch size is 2 unmarked white eggs, which become nest stained, averaging 44.7 x 36.6 mm (Robson 2000). more....

Conservation: Poorly known and apparently uncommon in most parts of its range, but may be overlooked because of its unobtrusive behavior. It is probably negatively affected by the loss of lowland primary forest. Presently categorized globally as a species of "Least Concern" by BirdLife International (2006), but was considered Near Threatened by Collar et al. (1994). It is categorized as "Data Deficient" here because of the lack of information about its actual status in so much of its range.

Important References: 
Ali, S., and S.D. Ripley. 1968. Handbook of the birds of India and
  Pakistan. Vol. 1., Divers to hawks. Oxford University Press, Oxford, UK.
Baker, E.C.S. 1928. The fauna of British India, including Ceylon and
  Burma. Vol. 5. 2nd ed. Taylor & Francis, London.
Chia, A. 2011. Jerdon's Baza Aviceda jerdoni in South-east Asia -- a
  review of its occurrence, status and movements. BirdingASIA 16:32-34.
Clark, W.S. 1994. Jerdon's Baza. P. 107 in del Hoyo, J., A. Elliott, and
  J. Sargatal (eds.), Handbook of birds of the world. Vol. 2. New World
  vultures to guineafowl. Lynx Edicions, Barcelona, Spain.
Eck, S. 1976. Die Vögel der Banggai-Inseln, insbesondere Pelengs.
  Zoologische Abhandlungen Staatliches Museum für Tierkunde in Dresden
Ferguson-Lees, J., and D.A. Christie. 2001. Raptors of the world. Houghton
  Mifflin, Boston, MA.
Naoroji, R. 2006. Birds of prey of the Indian subcontinent. Christopher
  Helm, London.
van Balen, B.S. 1998. Tropical forest raptors in Indonesia: recent
  information on distribution, status, and conservation. Journal of Raptor
  Research 32:56-63.

Kim Chye, Lim

Last modified: 1/13/2012

Recommended Citation: Global Raptor Information Network. 2022. Species account: Jerdon's Baza Aviceda jerdoni. Downloaded from http://www.globalraptors.org on 27 Jan. 2022

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