These tanagers were fairly common along the rivers. Overall color varies with subspecies. This is the dark nominate race, males of which often look all black from a distance. Male plumage is deep red velvet, decidedly darker than the female. The striking enlarged silver-colored mandible gives this species its name. Canon PowerShot SX60 HS.
References:
Hilty, S. (2019). Silver-beaked Tanager (Ramphocelus carbo). 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/61628 on 14 July 2019).
Silver-beaked Tanager (Ramphocelus carbo), 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/sibtan2