Sumba Hawk-owl (Ninox rudolfi)

Sumba Hawk-owl

[order] STRIGIFORMES | [family] Strigidae | [latin] Ninox rudolfi | [authority] Meyer, 1882 | [UK] Sumba Hawk-owl | [FR] Ninox de Sumba | [DE] Sumbakauz | [ES] Ninox de Sumba | [NL] Soemba-valkuil


Monotypic species


Members of the genus Ninox are hawk owls, ranging from small to large, with rounded heads without ear-tufts. They have long, pointed wings and a long tail. The nostrils are forward facing on an enlarged cere in an indistinct facial disk. There are at least 20 species in this genus, from Siberia through much of the Pacific rim, South-east Asia and Australasia.

Physical charateristics

White eyebrows and chin, crown, spotted white, and upperparts brown with fewer spots. Wings and tail finely barred. Underparts whitish with heavily barred reddish brown. Female slightly larger.

wingspan min.: 0 cm wingspan max.: 0 cm
size min.: 35 cm size max.: 40 cm
incubation min.: 0 days incubation max.: 0 days
fledging min.: 0 days fledging max.: 0 days
broods: 0   eggs min.: 0  
      eggs max.: 0  


Australasia : Sumba


It occurs up to 1000 m in primary, disturbed primary and secondary forest and forest edge, in both deciduous and evergreen formations. It is typically found occurring singly, in pairs or small dispersed groups of up to four birds.


Builds nest in cavity of large tree. No further detail

Feeding habits

Its diet is not known but probably consists mainly of insects.

Video Sumba Hawk-owl


copyright: Mark Sutton


This species has a moderately small population within its small range, and numbers are declining owing to ongoing forest conversion. However, the range is not yet severely fragmented or restricted to few locations, and the species is therefore classified as Near Threatened.
Ninox rudolfi is restricted to Sumba, Indonesia. Although characterised as uncommon or rare, recent observations have revealed that the species is widespread and moderately common on Sumba, despite forest cover being reduced to just 10% of the island
Sumba Hawk-owl status Near Threatened


Presumed sedentary

Distribution map

Sumba Hawk-owl distribution range map

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