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Ho Yen Mao
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Hemiprocne
- Order: Apodiformes
- Family: Hemiprocnidae
Hemiprocne is a single genus of the treeswift (or crested swift) family Hemiprocnidae.
1/ Grey-rumped treeswift (Yến mào, Hemiprocne longipennis)
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Hemiprocnidae
- Order: Apodiformes
Treeswifts or crested swifts are a family, the Hemiprocnidae, of aerial near passerine birds, closely related to the true swifts containing a single genus, Hemiprocne.
