| mortality in black siskins (carduelis atrata) with systemic coccidiosis. | ninety-five (97%) of 98 black siskins (carduelis atrata) died within 2 months of arrival in italy from south america with the following clinical sings: rapid weight loss, breast muscle atrophy, congested and distended abdomen, diarrhea, and lethargy. macroscopically we observed hepato-splenomegaly, pulmonary congestion, and thickening of the interstinal wall. histologically, lymphomonocytic transmural enteritis, interstitial mononuclear cell infiltrates in the lungs and in the liver, as well as ... | 1997 | 9027705 |