Habitat
Subtropical and tropical lowland dry grassland, high altitude grassland, lowland seasonally wet / flooded grassland. From sea-level - 1,500 m, occasionally up to 2,000 m.
Yellow-browed Sparrow (Ammodramus aurifrons) [XC573812]
by Leonardo Ord\u00f3\u00f1ez-Delgado from Finca San Jorge, Morelia\/Caquet\u00e1, Colombia (song)
Yellow-browed Sparrow (Ammodramus aurifrons) [XC597583]
by Leonardo Ord\u00f3\u00f1ez-Delgado from El Chaco, Napo, Ecuador (song)
Subspecies
Formerly placed with Grassland Sparrow (Ammodramus humeralis) in a separate genus, Myospiza and both sometimes considered to form a superspecies, but ranges overlap sufficiently to make such treatment implausible. Genetic studies indicate that the two are closely related to Grasshopper Sparrow (Ammodramus savannarum), which is, in turn, distant from other six species currently included in genus. These last should perhaps be reassigned to a different genus.
The following 4 subspecies are recognised:
apurensis (Phelps & Gilliard, 1941) - North-eastern Colombia east through llanos of western Venezuela to Orinoco Delta.
cherriei (Chapman, 1914) - East-central Colombia (in llanos of Meta).
tenebrosus (Zimmer, JT & Phelps, 1949) - South-western Venezuela (south-western Amazonas), south-eastern Colombia (Guainía and eastern Vaupés) and adjacent western Brazil.
aurifrons (Spix, 1825) - South-eastern Colombia (Seast of Andes) south through eastern Ecuador and eastern Peru to north-eastern Bolivia, and east through Amazonian Brazil.
BirdLife International Species Factsheet