Voice
A prolonged series of barbet-like whistles, 'hoop hoop hoop wup-wup-wup pupupupupu' and a quavering trill, increasing steadily in volume, 'wu u u u u u u u'. Also various squawks, barks and churrs.
Asian Barred Owlet (Glaucidium cuculoides) [XC294989]
by Ross Gallardy from Kaeng Krachan National Park, Ban Krang, KM 15-18, Phetchaburi, Thailand (song)
Asian Barred Owlet (Glaucidium cuculoides) [XC643975]
by Nick Athanas from Tambon Pa Kha, Amphoe Tha Wang Pha, Chang Wat Nan, Thailand (uncertain)
Subspecies
Possibly forms superspecies with Javan Owlet (Glaucidium castanopterum). Sometimes considered to include Javan Owlet (Glaucidium castanopterum) and Chestnut-backed Owlet (Glaucidium castanotum) as subspecies.
The following 8 subspecies are recognised:
cuculoides (Vigors, 1831) - Himalayas from north-eastern Pakistan and Kashmir east to western Sikkim.