North-eastern India (Arunachal Pradesh and Sikkim) through Bhutan to south-eastern Tibet.
 
Population
Estimated population is 2,500 - 9,999 (2010) and decreasing.
Status VU
Forest degradation and fragmentation as a result of shifting cultivation, timber harvesting and clearance for tea plantations, accidental snaring, are the main threats.
For more information see BirdLife International Species Factsheet.
Voice
A repeated loud 'prrreet', followed by series of 'prr prr-er-it' phrases, ascending to a climax.
Chestnut-breasted Partridge (Arborophila mandellii) [XC426414]
by Jelle Scharringa from Eagle Nest, Lama camp area, Arrunachal Pradesh, India (song)
Chestnut-breasted Partridge (Arborophila mandellii) [XC470186]
by Jelle Scharringa from Lama Camp, near Eaglenest WLS, Arunachal Pradesh, India (call)
Subspecies
No subspecies.
Similar Species
Distinguished from similar Rufous-throated Partridge (Arborophila rufogularis) by more rufescent crown and head-sides, white gorget and entirely chestnut upper breast.
References
See References.