1. The breeding behavior of the Blue-black Grassquit;Alderton C. C;Condor,1963
2. Bird display and behaviour: An introduction to the study of bird psychology;Armstrong E. A,1965
3. Nesting of the Blue-black Grassquit in Panamá;Barnard G. C;Condor,1956
4. Notas ecológicas sobre Volatinia jacarina (Passeres, Fringillidae);Carvalho C. T. de;Bol. Mus. Paraense "Emílio Goeldi",1957
5. Descripção de ninhos e ovos das Aves do Brasil;Euler C;Rev. Mus. paul,1900