English: Gigantoraptor is the the largest known oviraptorsaur, at 8 m in length, and weighing up to 2 t. It required large amounts of energy to sustain itself, and is thought to have been a dietary generalist, able to consume any food it could find. It had a deep toothless beak, which could cut through plants, while also being adapted to process meat. Unlike other oviraptorsaurs, Gigantoraptor may not have been fully feathered. Larger animals rely more on body mass for temperature regulation, which could have led to some loss of feather covering as Gigantoraptor evolved. However, arm and tail feathers were likely still present, being useful for display behavior and covering eggs while brooding.