Goniodes are a genus of chewing lice which are common ectoparasites of chickens. There are four species which affect chickens--G. dissimilis (referred to as the "Brown Chicken Louse"), G. gigas (referred to as the "Large Chicken Louse"), G. hologaster, and G. abdominalis. Goniodes are 3-3.5 mm in length and brown to reddish brown in color. They're found throughout the chicken's body and live on the bird's skin and body feathers. The female lays eggs in clusters near the base of the feathers.