The lesser seed-finches are two species of Thraupids in the genus Oryzoborus. The two have often been consider conspecific, but are increasingly treated as separate species:

• Chestnut-bellied seed-finch (Oryzoborus angolensis): South America east of the Andes.
• Thick-billed seed-finch (Oryzoborus funereus): Southern Mexico through Central America to north-western South America.

This disambiguation page lists articles associated with the title Lesser seed-finch.
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