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Bali Impressions-Animals in and around your house or Hotel

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Hemiprocne longipennis, Grey-rumped Treeswift

The treeswifts form a small family, Hemiprocnidae in the Apodiformes order which includHemiprocne longipennis, Grey-rumped Treeswiftes three families: treeswifts, swifts and (maybe a bit surprisingly) hummingbirds. Hemiprocnidae is only in the Oriental region and only has one genus with four species. Treeswifts differ from true swift in that they can and often do perch on branches, they are arboreal birds
The Grey-rumped Treeswift forms a superspecies and was previously considered conspicific with the Crested Treeswift (H. coronata). The former occurs in the Sunda subregion plus Sulawesi, the latter replaces it in Thailand and Indochina into India. Incredibly, for these widespread and fairly numerous two species there are big gaps in our knowledge of their nesting biology, neither incubation nor fledging periods have ever been recorded.
 

 

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