Mallophaga are a group of small, wingless insects commonly known as chewing lice. They primarily infest birds and some mammals, feeding on skin debris, feathers, and hair. These parasites have specialized mouthparts that allow them to grasp and chew their food effectively. There are over 3,000 species of Mallophaga, and they are typically found in the feathers of birds or the fur of mammals. While they do not transmit diseases like some other parasites, heavy infestations can lead to discomfort and irritation for their hosts. Control measures often involve proper hygiene and treatment of infested animals.