J. F. Gmelin, 1789,
Buenos Aires, Argentina.
This species sometimes placed in Emberizoides. Western “olivascens group” (all races except nominate) close to species rank, although differentiating characters subtle: claimed slightly stronger orange bill (not clearly confirmed in photographs; ns) with less dark brown on culmen (1); much weaker or no dorsal streaking (2); paler lores, chin and abdomen (1); slightly more decurved bill (1); and slightly larger size, with clear mean longer wing and tail (but effect size in males on published evidence#R 1.22 and 1.48 respectively, score 1); but available recordings reveal no difference in song (more detailed research needed). Nevertheless, nominate race may be sympatric with gossei in Córdoba, Argentina, although this needs confirmation. Four subspecies recognized.
Food and feeding
Status and conservation
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