Overview

Brief Summary

Spangled Kookaburras (Dacelo tyro) are found in southern New Guinea and (historically) the Aru Islands in wooded dry savanna, in thickets of Dillenea alata on swamp margins, and in mosaics of monsoon forest, thickets, and Melaleuca savanna woodland, as well as in dense monsoon and riverine forest. They keep mostly to the understorey, feeding mainly from a perch 1 to 4 m high. The Spangled Kookaburra's nest is excavated in a termitarium above the ground (it is possible that tree cavities are used as well). Although the Spangled Kookaburra is relatively common within its range, the restricted distribution make the species somewhat vulnerable.

(Woodall 2001 and references therein)

  • Woodall, P.F. 2001. Genus Dacelo. Pp. 200-203 in: del Hoyo, J., Elliott, A., and Sargatal, J., eds. Handbook of the Birds of the World. Volume 6. Mousebirds to Hornbills. Lynx Edicions, Barcelona.
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Comprehensive Description

Male nominate race head, hindneck and mantle yellow-buff with black margins to feather, back and scapulars balck, rump and UpT-C bright cobalt-blue, tail and wings blue-black, lesser and medisn W-C edged with bright blue, chin and throat white, rest of underparts washed buff to pale orange, upper mandible black, lower mandible pale horn, iris dark brown, lebs and feet grey to yellowish-grey.Juvenile head duskier,underparts with narrow black margins. Race archboldi paler blue wing-coverts, pale underparts.

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Distribution

Subspecies and Distribution:


    * tyro G. R. Gray, 1858 - Aru Is. * archboldi (Rand, 1938) - S New Guinea, from R Bian and Habé I to R Wassi Kussa and Dimississi.


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Physical Description

Size

33 cm, male 128-145 g, female 148-165 g

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Diagnostic Description

Male nominate race head, hindneck and mantle yellow-buff with black margins to feather, back and scapulars balck, rump and UpT-C bright cobalt-blue, tail and wings blue-black, lesser and medisn W-C edged with bright blue, chin and throat white, rest of underparts washed buff to pale orange, upper mandible black, lower mandible pale horn, iris dark brown, lebs and feet grey to yellowish-grey.Juvenile head duskier,underparts with narrow black margins. Race archboldi paler blue wing-coverts, pale underparts.

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Ecology

Habitat

Habitat and Ecology

Systems
  • Terrestrial
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Well wooded dry savannah, thickets of Dillenea alata on swamp margins and mosaic of monsoon forest, thicket and Melaleuca savannah woodland, also dense monsoon and riverine forest. Frequents mostly the understorey.

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Migration

Sedentary,

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Trophic Strategy

Insect including beetles, ants and winged ants, and stic-insect. Forages from perch 1-4 m high, with a clear view, patiently seas ground below.

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Life History and Behavior

Behavior

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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
LC
Least Concern

Red List Criteria

Version
3.1

Year Assessed
2012

Assessor/s
BirdLife International

Reviewer/s
Butchart, S. & Symes, A.

Contributor/s

Justification
Although this species may have a restricted range, it is not believed to approach the thresholds for Vulnerable under the range size criterion (Extent of Occurrence <20,000 km2 combined with a declining or fluctuating range size, habitat extent/quality, or population size and a small number of locations or severe fragmentation). The population trend appears to be stable, and hence the species does not approach the thresholds for Vulnerable under the population trend criterion (>30% decline over ten years or three generations). The population size has not been quantified, but it is not believed to approach the thresholds for Vulnerable under the population size criterion (<10,000 mature individuals with a continuing decline estimated to be >10% in ten years or three generations, or with a specified population structure). For these reasons the species is evaluated as Least Concern.
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Not Threatened.

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Population

Population
The global population size has not been quantified, but the species is reported to be common in suitable habitats (del Hoyo et al. 2001).

Population Trend
Stable
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Threats

Restricted-range species

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Wikipedia

Spangled Kookaburra

The Spangled Kookaburra (Dacelo tyro) also called Aru Giant Kingfisher, is a little-known, but spectacular species of Kookaburra found only on the Aru Islands and the Trans Fly savanna and grasslands of southern New Guinea. It has bright blue wings and tail, a white chest and belly, dark eyes, and a striking white-spotted black head. Practically nothing is known of its family life or breeding biology.

References[edit]

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