The Scarlet-rumped Tanager is known locally as “Sargento” (Seargent) and “Sangre de Toro” (Bull’s blood), among other names. Previously it was known as the Passerini´s Tanager, being virtually identical to the Cherries Tanager, but only inhabiting the Caribbean, whereas the Cherries was only found in the pacific. In sunlight, the red rump of the male glows strongly, contrasting with the deep black in the eyes and the rest of the body. The female is brownish in coloration, and differs from the Cherries by not having the orange throat. The Juvenile male has the same coloration as the female, however as it morphs into adult plumage, patches of black start to show in the body, giving it kind of a Calico look.