Most of the natural history of Black-bellied Tanager is undescribed. Basic behaviors such as breeding, foraging, and social interactions need to be documented. The relationship with Silver-beaked Tanager (Ramphocelus carbo) should also be further investigated, both to clarify the extent to which these two species are sympatric, and also to document the frequency of hybridization between them. Additional genetic samples from across the range of both Silver-beaked and Black-bellied tanagers would help clarify the taxonomy of these species. Parker et al. (1996) list the research priority for the Black-bellied Tanager as "low" compared to other Neotropical birds.