Buntings and New World Sparrows (Emberizidae)

Half-collared Sparrow (Arremon semitorquatus) - HBW 16, p. 572

French: Tohi à semi-collier German: Halsband-Buschammer Spanish: Cerquero Semiacollarado

Taxonomy: Arremon semitorquatus Swainson, 1838, Rio de Janeiro, Brazil.
Until recently considered conspecific with A. taciturnus. In recent study found to be parapatric with latter, and no intermediate specimens or evidence of gene flow. Monotypic.

Distribution: Atlantic montane areas of SE Brazil (Espírito Santo S to NE Rio Grande do Sul).