title: Frenkelia sp.-like infection in the small intestine of a red-tailed hawk.
abstract: Developmental stages of a Frenkelia sp.-like coccidium were observed in tissue sections of the duodenum, jejunum, and ileum of a naturally infected red-tailed hawk (Buteo jamaicensis borealis) that died and was examined at necropsy. Developmental stages were located in the lamina propria of these tissues. Thirty sporulated sporocysts measured 11.1 X 8.1 microns in tissue sections. Four sporozoites were present in each sporulated sporocyst. The coccidial infection was not a contributing factor in the death of this red-tailed hawk.
mesh_terms: D000818:Animals; D001715:Bird Diseases / Q000469:parasitology* / Q000473:pathology; D001717:Birds; D003048:Coccidiosis / Q000473:pathology / Q000662:veterinary; D007411:Intestinal Diseases, Parasitic / Q000473:pathology / Q000662:veterinary*; D011528:Protozoan Infections / Q000469:parasitology / Q000473:pathology; D011529:Protozoan Infections, Animal; D012523:Sarcocystosis / Q000473:pathology / Q000662:veterinary