The seedeaters are seed-eating bird with a distinctively conical bill.
Most are Central and South American birds that were formerly placed in the American sparrow family (Emberizidae), but are now known to be tanagers (Thraupidae) closely related to Darwin’s finches. A few "atypical" seedeaters are closely related to certain tanagers, many of which (such as the flowerpiercers) have peculiarly adapted bills.

True seedeaters
Amaurospiza – blue seedeaters (4 species, tentatively placed here)
Dolospingus – White-naped Seedeater

Oryzoborus – seed-finches (6 species, sometimes included in Sporophila)
Chestnut-bellied Seed-finch Oryzoborus angolensis
Black-billed Seed-finch Oryzoborus atrirostris
Large-billed Seed-finch Oryzoborus crassirostris
Thick-billed Seed-finch Oryzoborus funereus
Great-billed Seed-finch Oryzoborus maximiliani
Nicaraguan Seed-finch Oryzoborus nuttingi

Sporophila – typical seedeaters (some 30 species)
Ruddy-breasted Seedeater, Sporophila minuta
Yellow-bellied Seedeater, Sporophila nigricollis
Variable Seedeater, Sporophila corvina
White-collared Seedeater, Sporophila torqueola