James Gregory Massey Flammer, K., Massey, J. G., Roudybush, T., Meek, C. J., & Papich, M. G. (2013). Assessment of plasma concentrations and potential adverse effects of doxycycline in cockatiels (Nymphicus hollandicus) fed a medicated pelleted diet. Journal of Avian Medicine and Surgery, 27(3), 187–193. https://doi.org/10.1647/1082-6742-27.3.187