About Emberizoides ypiranganus H.Ihering & R.Ihering, 1907
The lesser grass finch, with the scientific name Emberizoides ypiranganus, is also commonly called the grey-cheeked grass-finch. This species of bird is currently classified in the family Thraupidae; it was previously classified in the family Emberizidae instead. It can be found in Argentina, Brazil, Paraguay, and Uruguay. Its natural habitats are temperate grassland and swamps.