Bay-chested Warbling-Finch
- kingdom: Animalia
- phylum: Chordata
- class: Aves
- order: Passeriformes
- family: Thraupidae
- genus: Castanozoster
- species: Castanozoster thoracicus
São Francisco de Paula
Rio Grande do Sul
Cachoeiras de Macacu
Itatiaia
Resende
Rio de Janeiro
Campos do Jordão
São Paulo
São Paulo
Brazil