Lice (Antennata: Phthiraptera) fauna in Turkey is not a well-known field. A large number of lice species described up to date parasitize birds. Most bird species of nearly 500 species in Turkey have not been examined from the perspective of louse specimen. No louse was seen on some examined species, and that is why lice fauna on poultry have not been searched out well. This paper emphasizes on what researchers need to pay attention in the course of research, which features and knowledge they need to have, and which morphological criteria they need to examine during diagnosis of lice.