Rusty-browed Warbling Finch (Microspingus erythrophrys) [XC551380]
by Niels Krabbe from Quebrada San Lorenzo, Salta, Capital, Salta, Argentina (call, song)
Rusty-browed Warbling Finch (Microspingus erythrophrys) [XC764582]
by Andrew Spencer from Catamarca: between Las Juntas and La Silleta, Argentina (dawn song)
Subspecies
New molecular data indicate that genus forms a clade with the tanager (Thraupidae) genera Hemispingus and Thlypopsis, and that Compsospiza, which often subsumed within present genus, is sister to that clade. Molecular evidence suggests that this species is part of a clade that also includes Plain-tailed Warbling-Finch (Microspingus alticola), Ringed Warbling-Finch (Microspingus torquatus) and Black-capped Warbling-Finch (Microspingus melanoleucus), where similar-looking Cinnamon Warbling-Finch (Poospiza ornata) was found not to be a close relative.
The following 2 subspecies are recognised:
cochabambae Gyldenstolpe, 1941 - And southern Bolivia (Cochabamba and western Santa Cruz south to Chuquisaca).
erythrophrys (Sclater, 1881) - Southern Bolivia (Tarija) and north-western Argentina (Jujuy and Salta south to Tucumán and Catamarca).