Barrantes, Gilbert , and Luis Sandoval. 2019. “Effect of El Niño and La Niña on Abundance of Frugivorous and Nectarivorous Terrestrial Birds in Three Tropical Forests”. Revista De Biología Tropical 67 (S2):S282–S297. https://doi.org/10.15517/rbt.v67i2SUPL.37252.