Moustached Treeswift (Hemiprocne mystacea) [XC151720]
by Patrik \u00c5berg from Weda, Central Halmahera, North Maluku, Indonesia (flight call)
Moustached Treeswift (Hemiprocne mystacea) [XC404086]
by Frank Lambert from near Hambere, Kolombangara, New Georgia Group, Western Province, Solomon Islands (call)
Subspecies
The following 6 subspecies are recognised:
confirmata Stresemann, 1914 - Moluccas (excluding Kai and Sula groups) to Aru Is.
mystacea (Lesson, 1827) - New Guinea mainland; islands of Geelvink Bay and western Papuan Is.
aeroplanes Stresemann, 1921 - Bismarck Archipelago (excluding Admiralty Is and Feni Is).
macrura Salomonsen, 1983 - Admiralty Is.
woodfordiana (Hartert, 1896) - Feni Is and most of Solomon Is (including Bougainville).