Diagnostic challenge

References 

1. Greiner EC. Parasitology. In:  Altman RB,  Clubb SL,  Dorrestein GM,  Quesenberry K editor. Avian Medicine and Surgery. Philadelphia, PA: WB Saunders; 1997;p. 335–336
2. Van Der Heyden N. Hemoparasites. In:  Rosskopf WJ,  Woerpel RW editor. Diseases of Cage and Aviary Birds. (ed 3). Baltimore, MD: Williams and Wilkins; 1996;p. 627–629
3. Pollock C, Carpenter JW, Antinoff N. Birds. In:  Carpenter JW editors. Exotic Animal Formulary. (ed 3). St. Louis, MO: Elsevier/Saunders; 2005;p. 178–198