Brushland Tinamou Nothoprocta cinerascens

Small, short-necked tinamou of the chaco region of the central Southern Cone. Most often detected by voice. From similar White-bellied Nothura, with which its range partly overlaps, by gray legs and brownish belly. Tends to prefer thorn forest with dense grass or scrubby understory, but can be seen along road sides. Song a 5-8 part flat whistle, given with progressively more emphasis.