Males and females of this brightly colored tanager are similar. This species is fairly common along river edges primarily in Western Amazonia. The silver-white lower mandible is unique to the genus Ramphocelus. Its diet consists mostly of fruit, but it is also feeds on nectar and is an important pollinator of the Purple Coral-tree (Erythrina fusca). The pollen sticks to its head and is carried from flower to flower. This species is known to be a cooperative breeder with more than two adults attending the nest. Canon PowerShot SX60 HS.
References:
Hilty, S. (2019). Masked Crimson Tanager (Ramphocelus nigrogularis). In: del Hoyo, J., Elliott, A., Sargatal, J., Christie, D.A. & de Juana, E. (eds.). Handbook of the Birds of the World Alive. Lynx Edicions, Barcelona. (retrieved from https://www.hbw.com/node/61625 on 4 July 2019).
Masked Crimson Tanager (Ramphocelus nigrogularis), In Neotropical Birds Online (T. S. Schulenberg, Editor). Cornell Lab of Ornithology, Ithaca, NY, USA. retrieved from Neotropical Birds Online: https://neotropical.birds.cornell.edu/Species-Account/nb/species/mactan1