Cambodia, China (mainland), Laos (B), Thailand (B), Vietnam.
Extreme southern Myanmar (southern Tenasserim) and adjacent south-western Thailand; central Laos and Vietnam (Tonkin, northern and central Annam and northern Cochinchina); and Hainan I (southern China).
 
Population
Estimated population is unknown (2010).
Ratchet-tailed Treepie (Temnurus temnurus) [XC295055]
by Peter Ericsson from Kaeng Krachan National Park, Panoenthung Campsite, Km 30-32, Phetchaburi, Thailand (call)
Ratchet-tailed Treepie (Temnurus temnurus) [XC626437]
by Jelle Scharringa from Kaeng Krachan National Park, KM 26-29, Phetchaburi, Thailand (call)