Guianan Schiffornis

The Guianan schiffornis (Schiffornis olivacea), also called the olivaceous schiffornis and olivaceous mourner, is a species of Neotropical bird in the family Tityridae, the tityras, becards, and allies. It is found in Brazil, French Guiana, Guyana, Suriname, and Venezuela. == Taxonomy and systematics == The northern schiffornis was originally described in 1906 as Scotothorus olivaceus. In about 1920 the species was moved into Schiffornis. For much of the twentieth century Schiffornis was placed in the manakin family Pipridae and its species were called manakins. Several early twenty-first century studies confirmed the placement of Schiffornis in Tityridae and taxonomic systems made the reassignment. In 1998 the American Ornithological Society was unsure where to place the genus and listed its members as incertae sedis but in 2011 moved them to Tityridae. What is now the Guianan schiffornis was eventually treated as a subspecies of what was then called the thrush-like manakin and later called the thrush-like schiffornis, Schiffornis turdina. Since at least the late twentieth century taxonomists had suspected that several species were embedded within Schiffornis turdina. Studies published in 2007 and 2011 confirmed that S. turdina was polyphyletic. Following these studies taxonomists separated the Guianan schiffornis and three other species from…