Andrade-Zuñiga, E. M., M. Morales, and D. Ariano-Sánchez. “Toxicity of the Feathers of Yellow Grosbeak, Pheucticus Chrysopeplus (Passeriformes: Cardinalidae), a Chemically Defended Neotropical Bird”. Revista De Biología Tropical, vol. 66, no. 4, Dec. 2018, pp. 1530–1535, doi:10.15517/rbt.v66i4.32059.