Habitat
Subtropical and tropical dry forest and shrubland, subtropical and tropical moist lowland forest, dry and moist savanna. From sea-level - 2,000 m.
Rufous-fronted Thornbird (Phacellodomus rufifrons) [XC256713]
by Robson Silva e Silva from Nova Roma, Goi\u00e1s State, Brazil (song)
Rufous-fronted Thornbird (Phacellodomus rufifrons) [XC587499]
by Daniel Mello from Queimados, Rio de Janeiro, Brazil (duet, song)
Subspecies
Considered by some authors to form a superspecies with Little Thornbird (Phacellodomus sibilatrix), but the two overlap considerably in distribution, and differ in body size and nest structure. Northern subspecies inornatus and castilloi sometimes treated as constituting a separate species. Subspecies peruvianus possibly also a separate species.
Proposed subspecies fargoi, from Paraguay and southern Brazil (Mato Grosso), described as browner above and with flanks and undertail-coverts more fulvous, but found to be not diagnosable by these characters and treated as synonym of sincipitalis.
The following 6 subspecies are recognised:
inornatus (Wied, 1821) - North-central Venezuela (south-eastern Falcón, Yaracuy and Carabobo east to Miranda).
castilloi Phelps, Jr. and Aveledo, 1987 - Western and central Venezuela (Lara, Portuguesa, Barinas and Apure east to Sucre and Monagas) and north-eastern Colombia (Boyacá, Arauca, Casanare, Vichada, north-eastern Meta).
peruvianus Hellmayr, 1925 - Extreme southern Ecuador (southern Zamora-Chinchipe) and northern Peru (upper Marañón Valley in Amazonas, Cajamarca and San Martín).
sincipitalis Cabanis, 1883 - Eastern Bolivia (Beni, Santa Cruz, Tarija), southern Brazil (southern Mato Grosso), north-central Paraguay and north-western Argentina (Jujuy, Salta, Tucumán).
specularis Hellmayr, 1925 - North-eastern Brazil (Pernambuco).