Escherichia coli infection may have resulted in the septic condition, which could have been a contributing factor in the bird's disease
state, but the organisms found in most major tissues led us to believe that leucocytozoonosis was the primary cause of death.
Indirect blood pressure measurement is considered unreliable in Amazon parrots (1); thus, the ABI method described in humans could not have been reliably used to confirm this bird's disease
. Transcoelomic echocardiography may have been a useful antemortem diagnostic procedure for further assessment of the cardiovascular system in this bird; however, that test was not elected because cardiomegaly was not present radiographically, and the technique is relatively insensitive for diagnosing atherosclerosis.