The Green Catbird is a robust bird (29 to 34 cm) with bright green wings and tail, a pale white bill and a red iris. Both sexes have distinct white-spots on the otherwise green underparts, and a dusky crown, nape and face. The lack of blackish ear coverts and the uniform bright green plumage of the larger Green Catbird distinguish it from the Spotted Catbird. It has strong legs, which it uses to bound up branches in search of food, or during courtship display. It is generally inconspicuous, more frequently heard uttering it characteristic cat-like wailing song than seen amongst the similarly coloured foliage of its rainforest home.