The sole member of the genus Periporphyrus was long considered to be confined to humid lowland forests of far northeast South America, where it ranges from extreme southeast Venezuela through the Guianas to east Amazonian Brazil. However, it has recently been found much farther west south of the Amazon in south central Amazonian Brazil. Both sexes have a massive, all-black bill, while males are largely carmine-red above, becoming more rose-red below, with a black head and throat. Females are marginally less distinctive, being principally yellow-green with a black head. They might be confused with the smaller Yellow-green Grosbeak (Caryothraustes canadensis), but the black is confined to the foreface. This striking bird is generally rare and not easily found throughout its range, being usually seen alone or in well-spaced birds. Very little is known concerning the species’ biology and life history.