title: Incidence of endoparasitism in a group of pigeons in the Chicago area.
mesh_terms: D000818:Animals; D001715:Bird Diseases / Q000453:epidemiology*; D002641:Chicago; D010856:Columbidae; D007411:Intestinal Diseases, Parasitic / Q000453:epidemiology / Q000662:veterinary*; D014245:Trichomonas Infections / Q000453:epidemiology / Q000662:veterinary; D014352:Trypanosomiasis / Q000453:epidemiology / Q000662:veterinary