Goniocotes are a genus of chewing lice which are common ectoparasites of chickens. There are two species which affect chickens--G. gallinae (referred to commonly as the "Fluff Louse") and G. hologaster. Goniocotes are 1-1.5 mm in length with round, yellow bodies. They are found within the body feather fluff on the bird's back, abdomen, and vent. The female lays eggs in clusters near the base of the feather. They tend to move slower than other louse species.