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Where are tree swifts found?

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Illustration of a chestnut-collared swift (Cypseloides rutilus) in flight, showing its dark brown body and wings with a distinctive reddish-brown collar around its neck. — Apodiform Chestnut-collared swift (*Cypseloides rutilus*)

Tree swifts, also known as crested swifts, are found in regions ranging from Southeast Asia and Australia to the Solomon Islands. They are members of the family Hemiprocnidae within the order Apodiformes.12