About Stilpnia viridicollis (Taczanowski, 1884)
Stilpnia viridicollis, which was first described by Taczanowski in 1884, is a species of bird in the tanager family. This species is commonly called the silver-backed tanager, and is also known as the silvery tanager. It inhabits humid highland forests in southern Ecuador, Peru, and Bolivia, and is regularly observed at Machu Picchu.