Ninox login3/18/2024 Several pairs have been observed in primary and secondary forest but not in the surrounding open terrain where the Sumba boobook hunts. This bird is smaller and has relatively longer wings than the Sumba boobook ( Ninox rudolfi) which also occurs on the island. The tail is pale reddish-brown with dark barring. The upper parts are light brown with widely separated, dark wavy markings and the underparts are whitish with fine dark chevrons. The beak is large and yellow, the eyes are yellow and there are no eartufts. The head is grey with fine dark barring and distinctive white eyebrows but an indistinct facial disc. The least boobook is about 23 cm (9.1 in) long and weighs 90 g (3.2 oz). In late 2001 a specimen of the bird was obtained, enabling a detailed description to be made for the first time it was named Ninox sumbaensis, the least boobook. When this call was recorded and played back on Sumba, there was a response from resident birds. The bird had a characteristic low whistling call " who", repeated at four second intervals, which distinguished it from other known species of owl. A phylogenetic analysis undertaken on a sample feather showed that the owl was an unknown species in the genus Ninox. In the 1980s ornithologists knew that there was an unknown species of owl on the island of Sumba. Its natural habitat is subtropical or tropical moist lowland forests. It is endemic to the Indonesian island of Sumba. The least boobook ( Ninox sumbaensis), also known as the little Sumba hawk-owl or little Sumba boobook, is a species of owl in the family Strigidae.
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