Children (27 direct children, 81 direct and indirect children):
Cave swiftlet
(tree size 4)
Linchi swiftlet
Mangaia swiftlet
Aerodramus manuoi
Pygmy swiftlet
Collocalia troglodytes
White-bellied swiftlet
(tree size 34)
Glossy swiftlet
Collocalia dodgei
Bornean swiftlet
Collocalia buday
Seychelles swiftlet
Collocalia elaphra
Tahiti swiftlet
Collocalia leucophaea
Atiu swiftlet
Collocalia sawtelli
Collocalia ariel
Plume-toed swiftlet
(tree size 5)
Ridgetop swiftlet
(tree size 2)
Tenggara swiftlet
(tree size 2)
Collocalia hypoleuca
Collocalia inexpectata
Collocalia innominata
Collocalia leucopygia
Collocalia natalis
Christmas island swiftlet
Collocalia neglecta
(tree size 2)
Drab swiftlet
Collocalia nitens
Collocalia spilura
Collocalia uropygialis
(tree size 2)
Satin swiftlet
Collocalia whiteheadi
(tree size 1)
Grey-rumped swiftlet
(tree size 2)
Collocalia marginata
Collocalia ocista
Collocalia ceramensis
Collocalia infuscata