The Grass Green Tanager (Chlorornis riefferii) average 20 cm in length and 53g in weight .
They can be found in and around tropical forests in Colombia, Ecuador, Bolivia and Peru at elevations of 1500-3350 m.
They are seen in pairs or in groups of 3 to 6 individuals.
Their nests are made of mosses and ferns, and the eggs are gray with light purple/grey dots.
They forage mostly on upper half of short trees and eat fruits and insects.