Mossy-nest Swiftlet (Aerodramus salangana) [XC509546]
by id from Kinabatangan River, upstream from Sukau, Sabah, Malaysia (call, song)
Subspecies
Genus often merged into Collocalia. Forms superspecies with Uniform Swiftlet (Aerodramus vanikorensis), Palau Swiftlet (Aerodramus pelewensis), Mariana Swiftlet (Aerodramus bartschi) and Caroline Swiftlet (Aerodramus inquietus) and all were formerly considered conspecific. Subspecies aerophilus of doubtful validity and often placed in Edible-nest Swiftlet (Aerodramus fuciphagus). Subspecies aenigma and heinrichi of Uniform Swiftlet (Aerodramus vanikorensis) sometimes considered to belong to present species.
The following 4 subspecies are recognised:
natunae (Stresemann, 1930) - Northern Borneo, and probably Sumatra and Natuna Is.