Hippoboscidae - Information from Wikipedia on the louse flies or keds which are ectoparasites of mammals and birds. "Stealth" Flies On Birds: The Hippoboscids - Photographs and information on these flat insects that live as parasites on birds and mammals. Melophagus ovinus - Information and a photograph of the sheep ked. Click to enlarge. Album: Hippoboscidae - Photographs of many flies in this family. Lipoptena mazamae: Deer Ked - Provides photographs of this ectoparasite of the white-tailed deer, its distribution, identification, life history, habitat and hosts. Pseudolychia canariensis: Pigeon Fly - Provides photographs of this ectoparasite of pigeons and doves, its distribution, identification, life history, habitat, hosts and the other parasites with which it is associated.