Calafate (Lonchura oryzivora)
König H. E., Korbel, R. & Liebich, H. (2016). Avian anatomy – textbook and colour atlas (2nd ed). Sheffield: 5m Publishing.
Genbrugge, A., Herrel, A., Boone, M., Van Hoorebeke, L., Podos, J., Dirckx, J., Peter A., & Dominique, A. (2011). The head of the finch: the anatomy of the feeding system in two species of finches (Geospiza fortis and Padda oryzivora). Journal of Anatomy, 219(6), 676-695. https://doi.org/10.1111/j.1469-7580.2011.01437.x