Habitat
Arid to fairly humid, dense, tangled thorn-scrub, pastures and hedgerows on bushy slopes with scattered Acacia macracantha trees, dry streambeds and eroded gullies adjacent to agricultural areas. From 2,000-3,100 m, occasionally up to 3,400 m.
North-western Peru (upper Marañón Valley in southern Cajamarca and La Libertad); reports from Ancash require documentation.
 
Population
Estimated population is 10,000 - 19,999 (2010) and decreasing.
Status VU
Habitat destruction and degradation through fire and clearance of land for agriculture are the main threats.
For more information see BirdLife International Species Factsheet.
Voice
A series of short, sharp, descending, accelerating, squeaky calls.
Chestnut-backed Thornbird (Phacellodomus dorsalis) [XC116078]
by Manuel Roberto Roncal Rabanal from Hacienda Lim\u00f3n, west of Balsas, Cajamarca, Peru (song)
Chestnut-backed Thornbird (Phacellodomus dorsalis) [XC36078]
by Andrew Spencer from rd to Chuquibamba, Maranon Valley, Peru (call, song)