Parker et al. (1996) list the research priority for the Common Diuca-Finch as “low” compared to other Neotropical birds. Future research should include how human activities affect populations since many populations live in cultivated areas, as well as more in depth research of how nest placement effects predation, and if loss of certain plant species could have a secondary effect on Diuca diuca nests and young. Also, recent research of tanager phylogenetics has revealed Diuca’s placement in a clade of tanagers where early-diverging members (e.g., Bangsia, Wetmorethraupis, and Chlorochrysa) are largely restricted to the Andes, whereas more nested genera (e.g., Lophospingus, Neothraupis, and Paroaria) have ranges southeast of the Andes (Sedano and Burns 2010, Burns et al. 2014). This may suggest that an ecological speciation event along the branch leading to the southern taxa allowed for the radiation of this group. Molecular sequence divergence between the Diuca diuca subspecies has not been studied.